Session Index

Quantum Electronics and Laser Technology

Poster Session I
Thursday, Dec. 7, 2017  12:30-14:00
Presider: -
Room: International Research Building 5F
Notes:
Paper No.  2017-THU-P0301-P001
Yuan-Yao Lin Award Candidate Dynamic cavity effect in Topological Insulator Bi2Te3 based Passive Q-switched Solid State Laser
Wei-Heng Sung;Peng Lee;Yi-Ran Wang;Chao-Kuei Lee;Yuan-Yao Lin

Dynamic cavity effect of a Bi2Te3 based Passive Q-switched solid-state laser was investigated. With saturation intensity only few kW, Bi2Te3 serves a sensitive saturable absorber. A transition from Q-switched to Continuous-wave state was observed when the pumping increases which was explained by the modulation instability spectrum of laser rate equation.

 
 
Paper No.  2017-THU-P0301-P002
Jun-Ting Guo Award Candidate Voltage Controlled liquid crystal terahertz phase shifter with Mg doped CuCrO2 transparent electrodes
Jun-Ting Guo

In this work, optical properties of CuCrO2 at THz range was characterized. Compared to ITO, Mg:CuCrO2 exhibits the great performance not only in transmission and conductivity. Using Mg:CuCrO2 as electrode, we have successfully demonstrated an terahertz phase shifter. The transmission of 70% reveal Mg:CuCrO2 is a promising electrode material.

 
 
Paper No.  2017-THU-P0301-P003
Cho-Yen Tsai Award Candidate THz emission from InN thin films and pyramids by optically-pumping
Cho-Yen Tsai

THz emission mechanism from Indium Nitride is investigated by the setup of Time-Domain Spectroscopy (THz-TDS). In this work, by combining the Fresnel equation, free carrier absorption and nonlinear effect (Optical rectification), we can well explain pump incident angle, pump polarization angle and pump power dependence of THz electric field.

 
 
Paper No.  2017-THU-P0301-P004
Shang-Lin Yang Award Candidate Generation of non-Gaussian optical vortices pulse in a degenerate optical resonator with an intra-cavity spiral phase plate
Shang-Lin Yang;Hsien-Che Lee;Jhih-He Tu;Yuan-Yao Lin

We report the generation of Q-switched optical vortex pulses using a degenerate optical resonator with an intra-cavity spiral phase plate (SPP). Vortex pulse with wavefront dislocation mirroring the topological charge of the SPP was generated experimentally on diode-pumped solid state laser system using Nd:YAG crystal and Cr:YAG saturable absorber.

 
 
Paper No.  2017-THU-P0301-P005
Yao-Yu Hsu Award Candidate Photonic Crystal Circular Nanobeam Laser with Type-II GaSb/GaAs Quantum Rings
Yao-Yu Hsu;Chih-Chi Chang;Kung-Shu Hsu;Hsiang-Ting Lin;Chiao-Yun Chang;Wei-Hsun Lin;Shih-Yen Lin;Min-Hsiung Shih

Photonic crystal circular nanobeam cavity laser with type-II GaSb/GaAs quantum rings was demonstrated. The defect mode in the cavity exhibits small mode volume, high quality factor which lead to high efficient, low threshold lasing emission. The ultracompact laser would be the potential light sources in chip-scale optoelectronic integrate circuits.

 
 
Paper No.  2017-THU-P0301-P006
Chen-Yu Chang Award Candidate Study of surface state carriers and free carriers in topological insulators via mid-infrared spectroscopy
Chen-Yu Chang;Tien-Tien Yeh;Chih-Wei Luo;Fang Cheng Chou;Marin Mirtchev Gospodinov

We measure the reflectivity spectra of topological insulators Sb2Te3-xSex (x = 0-3) and Bi2Te3-xSex (x = 0-3) at various temperatures by Fourier-transform infrared spectroscopy (FTIR) in mid-infrared region. Through Drude model and Falkovsky’s model, the contributions of surface state carriers and free carriers in reflectivity spectra have been studied.

 
 
Paper No.  2017-THU-P0301-P007
Chao-Kuei Lee Award Candidate Thickness Dependent Optical Nonlinearity and Pulsed Solid State Laser by Bismuth Telluride Saturable Absorber
Peng Lee;Yi-Ran Wang;Wei-Heng Sung;Chao-Kuei Lee

In this work, the high quality few-layered Bismuth-Telluride absorbers with different dominant thickness was prepared to explore the optical nonlinearity properties. In addition, the Q-switched Nd:YAG laser using the prepared TISAs are also demonstrated, which showing that the TISAs saturation intensity engineering can be reached by controlling the TI morphology.

 
 
Paper No.  2017-THU-P0301-P008
Zhen-Ting Huang Award Candidate High-Resolution Sensors Based on ZnO Surface Plasmon Nanolasers
Zhen-Ting Huang;Pi-Ju Cheng;Bo-Tsun Chou;Yi-Cheng Chung;Yu-Hsun Chou;Chun-Tse Chang;Tien-Chang Lu;Kuo-Ping Chen;Tzy-Rong Lin

We propose hybrid plasmonic-photonic crystal nanolasers consisting of a nanowire lying on a nano-trenched film. The resonant cavity mode reaches an extremely narrow linewidth which satisfactory sensitivity at wavelength of 374 nm. Aiming at near-ultraviolet gas detection, the designed cavity sensors exhibit distinguished characteristics such as high resolution and sensitivity.

 
 
Paper No.  2017-THU-P0301-P009
Chao-Kai Wang Award Candidate Pulse-Shaped Ultrafast Erbium-Doped Fiber Laser and Applications
Chao-Kai Wang

Based on Freezing Phase Algorithm (FPA) [1], an ultrafast pulse shaping algorithms is proposed for achieving transform limited pulses by exploiting the nature of sinusoidal function. The Improved FPA (IFPA) can process 20.5 times faster than FPA. The pulse width measured after IFPA is 1.2 % wider than calculation.

 
 
Paper No.  2017-THU-P0301-P010
Yu Chen Chang Award Candidate Generation of 700W-level high-power continuous wave by an Yb-doped fiber laser
Yu Chen Chang

In this work, we designed and analyzed a 700W-level high power fiber laser.

 
 
Paper No.  2017-THU-P0301-P011
Tien-Tien Yeh Award Candidate Ultrafast carrier dynamics in topological insulators studied by ultrabroadband mid-infrared pump-probe spectroscopy
Tien-Tien Yeh;Wen Hao Lin;Chih-Wei Luo;Hideto Shirai;Takao Fuji;Cheng-Maw Cheng;Ku-Ding Tsuei;Takayoshi Kobayashi;Fang Cheng Chou;Marin Mirtchev Gospodinov

The ultrafast carrier dynamics in topological insulators (TIs) including Bi2Te3-xSex and Sb2Te3-xSex (x=0,1,2) was studied by 800-nm pump and ultrabroadband mid-infrared spectroscopy. By Drude and Falkovsky’s models, the ultrafast dynamics of bulk and surface carriers in TIs have been clearly revealed.

 
 
Paper No.  2017-THU-P0301-P012
Wei-Hsin Wu Award Candidate Generation of octave-spanning intense supercontinuum from Yb:doped solid- state lasers in multiple thin plates
Wei-Hsin Wu;Chih-Hsuan Lu;lzch2000@hotmail.com Kuo;Yi-Hsun Tseng;Chia-Lun Tsai;Shang-Da Yang;Ming-Chang Chen;A. H. Kung

We demonstrate generation of intense octave-spanning supercontinuum, covering from 550 nm to 1300 nm, in a double-stage multiple thin plate system driven by 1030 nm, 170 fs pulses. Such supercontinuum can support 3 fs single- cycle pulses for applications in bright isolated attosecond pulses generation and time-resolved spectroscopy.ㄒ

 
 
Paper No.  2017-THU-P0301-P013
Han-Wei Hsiao Award Candidate Development of Coupled NEGF-Poisson Solver with Scattering E ects in Nanowire Device
Han-Wei Hsiao;Yuh-Renn Wu

To investigate the carrier transport in nanoscale electronic devices, a self-consistent NEGF-Poisson solver which includes electron-honon scattering and interface roughness is developed. The result can capture the saturation on/off behaviors of GaAs Nanowire FETs. The phenomenon of energy relaxation and broadening due to inelastic scattering processes can also be observed.

 
 
Paper No.  2017-THU-P0301-P014
Wen-kuan Hsu Award Candidate Optimized Quantum-well-intermixing for EAM-SOA By Adjusting The Doping Level Of P-type Layer
Wen-kuan Hsu;Yi-Jen Chiu;Yang-Zen Chen;Rih-You Chen;Wei Lin

Impurity free vacancy disordering (IFVD) quantum-well-intermixing (QWI) with large p-doping offset layer is proposed for monolithic photonic integration. P-dopant diffusion is thus restricted during QWI, enhancing bandgap engineering. SOA-integrated EAM has been demonstrated, showing high speed and high modulation efficiency.

 
 
Paper No.  2017-THU-P0301-P015
Raul Amaury Robles Robles Award Candidate Work Extraction in Atom Field interactions
Raul Amaury Robles Robles;Ray-Kuang Lee

We analyze the conditions at which Work can be extracted in a quantum atomic-field interaction scheme. We show that the presence of quantum phase transitions can facilitate the extraction of work; however crossing the QPT does not guarantee extraction of work. We show that the RWA affects work extraction.

 
 


Quantum Electronics and Laser Technology

Metamaterials and Laser Applications
Thursday, Dec. 7, 2017  13:00-14:45
Presider: Ray-Kuang Lee;Yuan-Yao Lin
Room: International Research Building IR3003(3F)
Notes:
13:00 - 13:30 Paper No.  2017-THU-S0301-I001
Invited Speaker:
Yuri S.Kivshar
Recent advances in the physics and applications of metamaterials
Yuri S.Kivshar

Metamaterials, artificial electromagnetic media that are structured on the subwavelength scale, were initially suggested for the negative-index media, and later became a paradigm for engineering electromagnetic space and controlling propagation of waves. Recently, we observed the emergence of a new branch of metamaterials and nanophotonics aiming at the manipulation of strong optically-induced electric and magnetic Mie-type resonances in dielectric and semiconductor nanostructures with high refractive index. Unique advantages of dielectric resonant nanostructures over their metallic counterparts are low dissipative losses and the enhancement of both electric and magnetic fields that provide competitive alternatives for metal-based plasmonic structures including nanoantennas, nanoparticle sensors, and metasurfaces. This talk will summarize the recent research concepts and results on electromagnetic and optical metamaterials and metadevices including metamaterials with hyperbolic dispersion, all-dielectric nanophotonics, and recently emerged fields of meta-optics and metasurfaces.

 
 
13:30 - 14:00 Paper No.  2017-THU-S0301-I002
Invited Speaker:
Claudio Conti
Topological cascade lasers
Claudio Conti

Topological lasers are novel integrated light sources that are intrinsically robust with respect to perturbations, as fabrication imperfections, thermal and mechanical stress. We study theoretically and numerically the laser emission from one-dimensional topologically protected states in the so-called Aubry-Andre-Harper model. We report the first finite-difference time-domain Maxwell-Bloch simulations of topological lasers, and also consider a PT-symmetry breaking gain/loss distribution. We show that an engineered cascade of onedimensional devices with varying topological features realizes an integrated source emitting a frequency-comb with tunable spectral features. These topological cascades are a new concept that opens the road to many applications as in metrology, sensing and quantum tehcnologies.

 
 
14:00 - 14:15 Paper No.  2017-THU-S0301-O001
Tetsuhiro Kudo Optically evolved assembly of gold nanoparticles under laser trapping at interface
Tetsuhiro Kudo;Shang-Jan Yang;Hiroshi Masuhara

We demonstrated the optical trapping of gold nanoparticles at glass/solution interface, and found that the gold nanoparticle assembly is dynamically evolved and directionally extended outside the focus along the direction perpendicular to the linear polarization like a radiation pattern of dipole scattering.

 
 
14:15 - 14:30 Paper No.  2017-THU-S0301-O002
Xing You Chen Magic tilt angle for stabilizing two-dimensional solitons by dipole-dipole interactions
Xing You Chen;Ray-Kuang Lee

In the framework of the Gross-Pitaevskii equation, we study the formation andstability of effectively two-dimensional solitons in dipolar Bose-Einstein condensates (BECs),with dipole moments polarized at an arbitrary angle relative to the direction normal to the system's plane. There will be completely stabilized by the dipole-dipole interaction, in some interval.

 
 
14:30 - 14:45 Paper No.  2017-THU-S0301-O003
You-Lin Chuang Optical Density-Enhanced Squeezed Light Generation without Optical Cavities
You-Lin Chuang;Ray-Kuang Lee;Ite A. Yu

Squeezed light generated from atomic system with the effect of coherent population trapping (CPT) has been investigated. With the slow propagation in a high optical density (OD) CPT medium, the input coherent state becomes squeeze light with high degree of squeezing even in single passage.

 
 


Quantum Electronics and Laser Technology

Quantum Electroincs Student Award Session
Thursday, Dec. 7, 2017  15:15-17:00
Presider: Yen-Hung Chen;Kuan-Wei Su
Room: International Research Building IR3003(3F)
Notes:
15:15 - 15:30 Paper No.  2017-THU-S0302-O001
Hao Ping Cheng Award Candidate Generation of 35.2-THz Optical Beating in Synchronously Self-mode-locked 946-nm and 1064-nm Lasers with Compact Coupling Scheme
Hao Ping Cheng

A synchronously self-mode-locked (SML) laser at 946 and 1064 nm is accomplished by utilizing a compact coupling scheme to achieve the optical beating frequency up to 35.2 THz. The two-color SML emissions are established by a monolithic Nd:YAG cavity and a Nd:YVO4 crystal in a flat-flat cavity, respectively.

 
 
15:30 - 15:45 Paper No.  2017-THU-S0302-O002
Hsun-Chung Wu Award Candidate Implementation of Balanced Homodyne Detectors with the Common Mode Rejection Ratio higher than 50 dB
Hsun-Chung Wu;Chien-Ming Wu;Shu-Rong Wu;Yi-Ru Chen;Ray-Kuang Lee

We design and implement a balanced homodyne detector (BHD) for cancelling out the classical noises in the electric circuit, with two identical photodiodes and op-amplifiers. To evaluate the performance of our BHD, the quantum efficiency of the photodiode, up to 68%; and the CMRR higher than 52 dB.

 
 
15:45 - 16:00 Paper No.  2017-THU-S0302-O003
Tzu-Lin Huang Award Candidate A Dual-wavelength Self-mode-locked Monolithic Nd:YAG Cryogenic Laser with Two Orthogonally Polarized Emissions : Generation of Sub-terahertz Beating
Tzu-Lin Huang;Hao-Ping Cheng;Yung-Fu Chen

An ultrashort beat signal with repetition rate of 670 GHz is generated from the dual-wavelength self-mode-locked laser at cryogenic temperatures. Two orthogonally polarized components result from the external mechanical stress induced birefringence are further observed.

 
 
16:00 - 16:15 Paper No.  2017-THU-S0302-O004
Ting-Han Chou Award Candidate Ultra-Low Propagation Loss of Femtosecond Laser Induced THz Acoustic Phonons in Wurtzite GaN
Ting-Han Chou;Alexei Maznev;jateen gandhi;Lucas Lindsay;Hyun Doug Shin;Abdelhak Bensaoula;Keith Adam Nelson;Chi-Kuang Sun

1-1.4THz coherent acoustic phonons were generated by the femtosecond laser pulses. To study their propagation in wurtzite GaN, we used two InGaN-GaN multiple quantum wells as the transducers and detectors simultaneously. Our results show that the measured acoustic loss is much lower than the predictions from previous work.

 
 
16:15 - 16:30 Paper No.  2017-THU-S0302-O005
Cheng-Han Wu Award Candidate Resonance-Free Optical Response of a Vertical Cavity Transistor Laser
Cheng-Han Wu;Chao-Hsin Wu

We report the first microwave bandwidth measurement of a vertical cavity transistor laser and demonstrate a 3 dB bandwidth of 11 GHz resonance-free optical response via base-current or collector-voltage modulation. The resonance-free optical response is explained by the absence of carrier ‘accumulating’ due to the fast base electron-hole recombination lifetimes.

 
 
16:30 - 16:45 Paper No.  2017-THU-S0302-O006
Yu-Chung Chiu Award Candidate Stimulated polariton scattering near 4 THz from lithium niobate
Yu-Chung Chiu;Tsong-Dong Wang;Gang Zhao;Yen-Chieh Huang

All the previously reported simulated polariton scatting from lithium niobate has peak gain at 1.8 THz. We report the discovery of another phase-matched gain peak near 4 THz in lithium niobate. We also demonstrate a signal-seeded off-axis THz parametric oscillator that generates 14-W peak power at 4.2 THz.

 
 
16:45 - 17:00 Paper No.  2017-THU-S0302-O007
Giulia Marcucci Award Candidate Quantum Control of Solitons and Supercontinuum
Giulia Marcucci;Simone Montangero;Tommaso Calarco;Claudio Conti

Controlling quantum nonlinear optical processes, as the generation of highly nonclassical states and broadband spectra, is a major challenge in optics. We apply recent quantum control techniques to optical solitons. By positive P-representation and stochastic simulations, we show that a proper control optimizes soliton evolution and supercontinuum.

 
 


Quantum Electronics and Laser Technology

Poster Session II
Thursday, Dec. 7, 2017  15:30-17:00
Presider: -
Room: International Research Building 5F
Notes:
Paper No.  2017-THU-P0302-P001
How-Wei Liu Dual-wavelength LG01 laser
How-Wei Liu;Si-An Chen;Shou-Tai Lin

An actively Q-switched dual-wavelength LG01 laser at 1063 nm and 1064 nm is demonstrated. At 20 W diode power and 0.5 kHz Q-switching rate, the measured pulse energy and pulse width are 115 μJ and 126 ns, respectively.

 
 
Paper No.  2017-THU-P0302-P002
JerShien Chen Semiconductor Lasers Innovation Patent Analysis based on Laser Structure from 1998 to 2017
JerShien Chen

In this report, we analyze the semiconductor laser innovation patent with the standard international patent classification (IPC) based on laser structure, i.e. mounting, cooling, coating, wave guide, resonator, and external cavity. We compare patent application from the international corporate, i.e. major from United States, and from Taiwan native institutions.

 
 
Paper No.  2017-THU-P0302-P003
Chieh Chou On-state Current Saturation Behavior in Core Shell Structure Heterojunction TFET
Chien-Hong Teng;Chieh Chou;Che-Wei Yang;Hao-Hsiung Lin

We study the on-state current saturation behavior in core shell structure heterojunction tunnel field-effect transistor with different core lengths. Results show that the on-state current does not increase proportional to the core length due to the tunnel barrier width in the direction across channel increases as the core length increasing.

 
 
Paper No.  2017-THU-P0302-P004
Anup Kumar Sahoo Spatial Light Modulator for Single-Pixel Terahertz Imaging Systems based on Compressive Sensing Method
Anup Kumar Sahoo;Ci-Ling Pan

We report progress on liquid – crystal - based terahertz spatial light modulator for single pixel imaging. Here, the finger - type structure of indium tin oxide was fabricated on substrates. The prototype exhibited a modulation depth of 39% when all 9 pixels are operating together as transparent electrode

 
 
Paper No.  2017-THU-P0302-P005
Wen-Hsuan Kuan Analytic Modeling of Femto/Nano-Second Mode-Locked Fiber Laser by Cubic-Quintic Ginzburg-Landau Equation
Wen-Hsuan Kuan;Kuei-Huei Lin

We report a passively mode-locked erbium-doped fiber laser with pulsewidth switchable from 714 fs to 76.8 ns as well as dual-width operation. Analytic modeling of the fiber laser with cubic-quintic Ginzburg-Landau equation is presented, in which the pulsewidths are calculated as functions of intracavity dispersion, saturable absorption, and self-phase modulation.

 
 
Paper No.  2017-THU-P0302-P006
Yu-Chung Chiu Machine-diced Long-period Distributed-feedback Optical Parametric Oscillator
Yu-Chung Chiu;Yu-Wen Ku;Shih-Chih Su;Yen-Chieh Huang

We report long-period distributed-feedback optical parametric oscillation at 2.8 μm from a machine-diced 60-μm grating in a PPLN crystal pumped by a laser at 1064 nm.

 
 
Paper No.  2017-THU-P0302-P007
Chun-Hui Huang Passive mode-locking of a diode-pumped Nd laser based on cascaded second-order nonlinearity
Shou-Tai Lin;Chun-Hui Huang

A diode-pumped mode-locking Nd:YVO4/YVO4 laser via positive cascaded second-order Kerr lens and soft aperture effects at 1064 nm was demonstrated. Under 10 W diode pump power, the measured average power, pulse repetition rate and pulse duration are 1.3 W, 175 MHz and 2.8 ps, respectively.

 
 
Paper No.  2017-THU-P0302-P008
Jhih-Yong Han Speckle Reduction Using Fiber-laser Pumped Nonlinear Photonic Crystals with Double-slit Structures
Jhih-Yong Han

Using fiber laser pumped the poled quasi-phase matching device with wavelength- and angle-diversity in the transversely-displaced structure, it were observed to reduce the speckle contrast ratio by a factor of about three.

 
 


Quantum Electronics and Laser Technology

Lase Science and Technology
Friday, Dec. 8, 2017  08:30-10:15
Presider: Ming-Dar Wei;Te-Yuan Chung
Room: International Research Building IR3003(3F)
Notes:
08:30 - 09:00 Paper No.  2017-FRI-S0303-I001
Invited Speaker:
Ju Han Lee
Topological Insulators for 2-μm Pulsed Fiber Lasers
Ju Han Lee

I review our group’s recent investigation results on the use of saturable absorbers based on bulk-structured topological insulators for the implementation of pulsed fiber lasers in the 2 μm spectral region. Our research focus was given to Bi2Te3 and filled skutterudite of In0.25Co4Sb12.

 
 
09:00 - 09:30 Paper No.  2017-FRI-S0303-I002
Invited Speaker:
Yung Fu Chen
Broad expansion of optical frequency combs by self-Raman scattering in coupled-cavity self-mode-locked monolithic lasers
Yung Fu Chen

In this work we numerically analyze and experimentally accomplish the broad expansion the optical frequency comb (OFC) by the self-Raman scattering in a coupled-cavity self-mode-locked (SML) monolithic Yb:KGW laser [1,2]. We firstly design a coated Yb:KGW crystal to generate the OFC in the SML operation. The crystal length shorter than 3.00 mm is used to avoid significant re-absorption losses. With a crystal length of 2.93 mm, the SML repetition rate of 25.78 GHz is obtained. We then employ a partially reflective mirror to form a coupled cavity that was set to multiply the repetition rate to reach 128.9 GHz. Furthermore, the critical value of the coupled reflectivity for the generation of self-Raman scattering is systematically explored and found to be approximately 90%. Experimental results reveal that a coupled reflectivity of 95% can lead to the generation of the first- and second-order SRS in the gain medium at the lowest frequency mode. As a result, the OFC can be expanded up to 8.4 THz with the pulse width down to 53 fs, as shown in Fig. 1. The total output power for the fundamental and the Stokes waves can achieve 1.6 W at a pump power of 8.7 W. Previously, several groups demonstrated sub-100 fs Yb:KGW mode-locked lasers with the action of a semiconductor saturable absorber mirror (SESAM) or Kerr-lens. The repetition rates in these earlier works were in the range of 30-80 MHz, whereas the present method can generate the repetition rate greater than 100 GHz. Our exploration confirms that the optical spectra generated by the SML and SRS process can be linked together to obtain an ultrahigh-repetition-rate broadband OFC.  

 
 
09:30 - 09:45 Paper No.  2017-FRI-S0303-O001
Yuan-Yao Lin Generation of optical vortices in a degenerate optical resonator with an intra-cavity spiral phase plate
Chia-Chi Yeh;Hsien-Che Lee;Yuan-Yao Lin

Generating optical vortices using a degenerate optical resonator with an intra-cavity spiral phase plate (SPP) was proposed and realize on diode-pumped solid state laser system. The rays retracing skewed V-shaped paths in the resonator are phase-locked to form vortex laser with wavefront dislocation mirroring the topological charge of the SPP.

 
 
09:45 - 10:00 Paper No.  2017-FRI-S0303-O002
Hsing-Chih Liang Exploring antiphase dynamics in a dual-polarization passively Q-switched Nd:YLF laser
Hsing-Chih Liang

The stable condition for π-polarization emission in an a-cut Nd:YLF laser is numerical analyzed to find the critical pump power for generating the orthogonally polarized emission. With the numerical analysis, an orthogonally polarized dual-wavelength PQS laser has been originally designed and an interesting phenomena of antiphase dynamics have been observed.

 
 
10:00 - 10:15 Paper No.  2017-FRI-S0303-O003
Tzu-Ying Tai Collective lasing behavior in monolithic GaN-InGaN core-shell nanorod lattice
Tzu-Ying Tai;Hao-Chung Kuo

We realized a room temperature laser by monolithic GaN-InGaN core-shell nanorod lattice with its threshold pumping density being 140 kW/cm2. The narrow mode spacing between lasing peaks suggested a strong coupling between adjacent whisper gallery modes. Mode switching was observed under different excitation area photoluminescence measurement.

 
 


Quantum Electronics and Laser Technology

Poster Session III
Friday, Dec. 8, 2017  12:30-14:00
Presider: -
Room: International Research Building 5F
Notes:
Paper No.  2017-FRI-P0303-P001
Yu Siang Wang Fabrication and Measurement of Directly Modulated Distributed Feedback Lasers
Yu Siang Wang;San Liang Lee;Fan Shun Cho;Da Wei Ren;Tsung Han Lee

A high-speed DML is fabricated and analyzed for applications in optical transmitters of large data rate. We fabricated the DFB lasers based on the AlInGaAs/InP material with a peak wavelength around 1310 nm. The lasers can have 28.34 mW output power and a resonant frequency larger than 17 GHz.

 
 
Paper No.  2017-FRI-P0303-P002
Ming Chang Shih Parametric Laser Emission Characteristics of a Semiconductor Circular Laser Diode
Ming Chang Shih;Li-Heng Chen;W. H. Lan

We present the output characteristics of a semiconductor laser diode, and shows that parametric laser emission can be excited by strong emission of the circular ring resonator due to optical nonlinearity, measurements of light-current and spectral analysis are used to explore the hybrid characteristics of resonant modes and parametric modes.

 
 
Paper No.  2017-FRI-P0303-P003
Seunghwan Ko Passive Q-switching of a 1-µm Fiber Laser Using Bulk-like WTe2 Particles
Seunghwan Ko;Jinho Lee;Ju Han Lee

We experimentally demonstrated the use of a saturable absorber based on bulk-like WTe2 particles for the implementation of a Q-switched 1-µm fiber laser. The modulation depth of the prepared saturable absorber (SA) was measured as ~2.18 % at 1.03 µm. Using the SA, stable Q-switched pulses were readily achieved.

 
 
Paper No.  2017-FRI-P0303-P004
Yu-Cheng Huang The influence of laser properties by varying the mode-overlap ratio in a diode-end-pumped solid-state laser
Yu-Cheng Huang;Yi-Wel Wu;Yu-Pin Lan

Optimized mode-overlap between pump-mode and cavity-mode is one of the main issues that influence the laser properties. In this article, a diode-end-pump solid state laser was used to observe the scene by changing the cavity length and radius of curvature-mirror to achieve the variation of mode-overlap ratio.

 
 
Paper No.  2017-FRI-P0303-P005
Jia-Ren Zou Design of high efficient DFB laser using the integration of high coupling Si grating
Jia-Ren Zou;Yi-Jen Chiu

A ultra-small size (150μm) multiple quantum well (MQW) DFB laser bonded on a high efficiency grating fabricated on silicon-on-insulator(SOI) substrate has been designed. Low threshold current of 3(mA) and high efficiency of 0.37 (W/A) can be both approached. This light source has high potential to apply on photonic integrated circuit.

 
 
Paper No.  2017-FRI-P0303-P006
Chu-Yuan Hsu Optimization of Perovskite Based Surface-Plasmon-polariton Nanolasers.
Chu-Yuan Hsu;Tien-Chang Lu

In this study, we have numerically studied the laser characteristics of perovskite nanowires placed on the four kinds of metal substrates. Surface plasmonic mode dispersion curves, transparency gains, and quality factors were calculated. Numerical results show that Ag and Al substrates are appropriate candidates in developing the novel perovskite nanolasers.

 
 
Paper No.  2017-FRI-P0303-P007
Hsin-Yao Chou Multi-wavelength Passively Q-switched Er-doped Fiber Laser with a Semiconductor Saturable Absorber
Hsin-Yao Chou;Cheng-Jhih Luo;Yinchieh Lai

A multi-wavelength passively Q-switched Er-doped fiber laser with a semiconductor saturable absorber is demonstrated. Multiple wavelength Q-switched states can be achieved by adjusting the pump power and the polarization controllers. An interesting internal correlated power oscillation phenomenon is found between the individual wavelengths for the dual wavelength Q-switched states.

 
 
Paper No.  2017-FRI-P0303-P008
Jau-Sheng Wang The applications about 2 micron laser sintering on Poly(methyl methacrylate)
Jau-Sheng Wang

2 micron laser has certain characteristics and applications that visible and near infrared lasers cannot provide as good, such as environmental survey, monitor, hazard prevention and rescue, free-space transmission, IR-LiDAR, cutting and jointing in manufacture, biomedical application, etc. In this study, we have a try on Poly(methyl methacrylate) sintering.

 
 


Quantum Electronics and Laser Technology

Nonlinear Photonics
Friday, Dec. 8, 2017  13:00-14:30
Presider: Shou-Tai Lin;Yen-Yin Lin
Room: International Research Building IR3003(3F)
Notes:
13:00 - 13:30 Paper No.  2017-FRI-S0304-I001
Invited Speaker:
Iam-Choon Khoo
Liquid crystalline organic photonic crystals for direct all-optical compression and modulation of ultrafast laser pulses
Iam-Choon Khoo

We report successful fabrication of well aligned cholesteric liquid crystal cells of record-setting thickness, and critically examine the role played by band-edge dispersion and enhanced ultrafast electronic optical nonlinearity in recent successful observations of direct femtosecond laser pulse modulations and group velocity slow-down.

 
 
13:30 - 13:45 Paper No.  2017-FRI-S0304-O001
Tze-An Liu 100 GHz Passively Mode-Locked Fiber Laser Realized by Nonlinear Fused-Quartz Micro-Resonator
Tze-An Liu;Yi-Chen Chuang;Wei-Jo Ting;Yuh-Chuan Cheng;Po-Er Hsu;Jin-Long Peng;Chao-Hua Wen

This paper describes the development of a 100 GHz high repetition rate mode-locked fiber laser including a fused-quartz micro-resonator. More than 10 comb lines were generated by adjusting the dual fiber coupling position and the polarization controller. Results demonstrated the mode-locking pulse-width of 1.2 ps as well.

 
 
13:45 - 14:00 Paper No.  2017-FRI-S0304-O002
CHI-MENG LU Electro-Optic Controlled, Highly Spectrum Narrowed Multiline Intracavity Optical Parametric Oscillators
CHI-MENG LU;Hung-Pin Chung;Wei-Kun Chang;Yen-You Chou;Reinhard Geiss;Shang-Da Yang;Thomas Pertsch;Yen-Hung Chen

An electro-optically (EO) spectrum narrowed, multiline intracavity optical parametric oscillator (OPO) is built based on a novel aperiodically poled lithium niobate device. The power spectral density of this EO controlled OPO has been enhanced by a factor of ~7.8 in contrast to the system operated in passive mode.

 
 
14:00 - 14:15 Paper No.  2017-FRI-S0304-O003
Chia-Lun Tsai 1-kHz, 3.3-mJ, 88-fs pulses at 1.55 μm by optical parametric chirp pulse amplifier
Chia-Lun Tsai;Yi-Hsun Tseng;Ming-Wei Lin;Shang-Da Yang;Ming-Chang Chen

We demonstrated 1-kHz, 3.3-mJ, 88-fs pulses at 1.55 μm by an optical parametric chirp pulse amplifier. For pursuing shorter pulses, we also demonstrate spectral broadening method which supports 18 fs (3.5-cycle) transform-limited pulses. This powerful laser system is essential for high order harmonic generation – coherent soft x-ray generation.

 
 
14:15 - 14:30 Paper No.  2017-FRI-S0304-O004
Ying Kuan Ko Development of Ultrafast Near-Ultraviolet and Deep-Ultraviolet Laser Pulses
Ying Kuan Ko;Atsushi Yabushita;Bing Xue;Takayoshi Kobayashi

For application of ultrafast time-resolved spectroscopy, we have developed the broadband sub-10 fs ultrafast laser pulses in near-ultraviolet (NUV) and deep-ultraviolet (DUV) range by using self-phase modulation (SPM) and broadband chirped-pulse four-wave mixing (BCP-FWM) process in noble gases filled hollow fiber.

 
 


Quantum Electronics and Laser Technology

Poster Session IV
Friday, Dec. 8, 2017  14:30-16:00
Presider: -
Room: International Research Building 5F
Notes:
Paper No.  2017-FRI-P0304-P001
Doddoji Ramachari Optical Properties of Nd3+-doped Oxyfluorosilicate Glasses at Terahertz Frequencies
Doddoji Ramachari;I-Fan Chien;Chao-Kai Wang;Chun-Ling Yen;Cho-Yen Tsai;Ci-Ling Pan

Terahertz time-domain spectroscopy has been used to study the optical properties of ZNbKLS and PbKNLS glasses doped with Nd3+ ions. The absorption coefficients α(ν), and refractive index n(ν), were measured in a frequency range from 0.2 THz to 1.2 THz. The results are compared with material properties.

 
 
Paper No.  2017-FRI-P0304-P002
Yuan-He Teng High power noise-like pulses generated by two core sizes gain fibers in an all-normal dispersion cavity
Chao-Wen Huang;Yuan-He Teng

We have designed a high power fiber laser cavity to generate noise-like pulses. Two ytterbium doped fibers with 10 μm and 30 μm core sizes were employed in an attempt to acquire higher output power. The highest average output power was 1.93 W with repetition rate 10.6 MHz.

 
 
Paper No.  2017-FRI-P0304-P003
Tsung-Yin Tsai Analyzing the band structure of InAs/InAsSb type II super lattice for mid and far infrared application
Tsung-Yin Tsai;Yuh-Renn Wu

Strain-balanced type-II InAs/InAsSb on GaSb substrate were designed for mid- and long-wavelength photodetectors. In our work, we develop a 8X8 k.p Schrodinger model to calculate the band structure of InAs/InAs0.62Sb0.38 T2SL, and a period of the superlattice consist of 13.9nm InAs layer and 4.5nm InAs0.62Sb0.38 layer.

 
 
Paper No.  2017-FRI-P0304-P004
Chun-Yan Lin Wave Localization With Curved Potentials
Chun-Yan Lin;You-Lin Chuang;Ray-Kuang Lee

To link the effect of geometry on wave propagation, we study wave localization in different geometric constraints, including parabola, hyperbola, S-shape, spiral and cardioid curves. Wave localization as the eigen-states in the trap potential are found numerically, then mapping back to the two-dimensional curved space.

 
 
Paper No.  2017-FRI-P0304-P005
Chi-Pin Chiu Bistability Depending on the Modulation Frequency in a Pump-modulation Solid-State Laser
Chi-Pin Chiu;Ken-Chia Chang;Chien-Yu Chu;Ming-Dar Wei

Optical bistability depending on the modulation frequency was explored in a pump-modulation Nd:YVO4 laser. When the laser operated around the degenerate cavity cofiguration, the amplitude fluctuation and the phase differences between modulation signals and lasing light is bistable by tuning the modulation frequecy.

 
 
Paper No.  2017-FRI-P0304-P006
Yi-Wel Wu The Characteristics for high-order Hermite-Gaussian transverse modes by a diode-pumped solid-state laser.
Yi-Wel Wu;Yu-Cheng Huang;Yu-Pin Lan

This study reports a simple way to observe high-order transverse Hermit-Gaussian modes by adjusting the laser cavity length and pumping position for tuning the cavity mode size and pumped mode size in a diode-end-pumped solid-state laser system.

 
 
Paper No.  2017-FRI-P0304-P007
Chi-Wei Wang Temperature Dependent Charge Control Model Of AlGaAs/GaAs/InGaAs Quantum-Well Heterojunction Bipolar Transistor
Chi-Wei Wang;Yun-Hsuan Chang;Chao-Hsin Wu

In this paper, we present a temperature-dependent charge control model of AlGaAs/GaAs/InGaAs Quantum-Well Heterojunction Bipolar Transistor (QW-HBT). Based on modified thermionic theory, a modified temperature-charge-control mode is developed. There is a fairly good agreement between the theory and the experiment.

 
 
Paper No.  2017-FRI-P0304-P008
Yao-Ching Chiu Utilization of femtosecond pump-probe technique on real time monitoring of ITO glass annealing
Yao-Ching Chiu;Zhi-Lin Hu;Ping-Han Wu;Hsiang-chen Wang

Femtosecond laser annealing is more selective than high-temperature annealing, applying it on multiple-layer elements can selectively anneal specific area and avoid excessive heat damaging other areas. We applying pump beam as the annealing source and probe beam to the real-time monitor the change of ITO transmittance.

 
 
Paper No.  2017-FRI-P0304-P009
Yuan-He Teng Characterization of POFC 30-μm-core Yb-doped active fiber
Yuan-He Teng

We report characteristics of the first large-core Yb-doped active fiber manufacture in Taiwan. These fibers exhibit characteristics or superior to comparable commercial productions.

 
 
Paper No.  2017-FRI-P0304-P010
Yu-Hsiang Peng Study on Laser Light Stability of Laser Resonant Cavity
Chien-Chung Tsai;Yu-Hsiang Peng;Shao-Zhang Lu;Hsin-Hong Liu

using the resonant cavity attenuation of the green laser (543nm) to do the laser experiment, to know the current use of the laser and the average life expectancy and to study of the laser resonant cavity caused to explore the problem of laser resonance cavity attenuation.

 
 


Quantum Electronics and Laser Technology

Quantum Electronics
Friday, Dec. 8, 2017  14:50-16:20
Presider: Chih-Wei Luo;Chao-Kuei Lee
Room: International Research Building IR3003(3F)
Notes:
14:50 - 15:05 Paper No.  2017-FRI-S0305-O001
Silvano Donati Improved sub-nanometer Sensitivity for a Self-Mixing Vibrometer using the FM Channel
Silvano Donati

We develop a new method to read the frequency modulation of a laser diode self-mixing interferometer, using a Mach-Zehnder interferometer as an edge filter, and obtain improved displacement (NED) of 1.3-pm/√Hz, about two order of magnitude better than the AM channel or a normal SMI.

 
 
15:05 - 15:20 Paper No.  2017-FRI-S0305-O002
Jia-Hong Gong 100 GHz Sub-Picosecond Hybrid Mode-Locked Erbium-doped Fiber Soliton Laser with Low Net Dispersion
Jia-Hong Gong;Sheng-Min Wang;Cheng-Jhih Luo;Yinchieh Lai

We demonstrate a 100 GHz sub-picosecond hybrid mode-locked Er-doped fiber laser with the assistance of a Fabray-Perot etalon and a LiNbO3 phase modulator. Characteristics of this high-repetition-rate short-pulse fiber laser under both passive and hybrid mode-locking cases are investigated.

 
 
15:20 - 15:35 Paper No.  2017-FRI-S0305-O003
Syue-Shan Lin Engineering of switching behavior of electro-optic directional couplers in aperiodically poled lithium niobate
Syue-Shan Lin;Chieh-Hsun Lee;Shih-Yuan Yang;Hung-Pin Chung;Song-Lin Yang;Tsai-Yi Chien;Kuang-Hsu Huang;Yen-Hung Chen

We report the first idea and demonstration of using aperiodically alternating-∆β schemes in LiNbO3 waveguides to achieve engineering favorable switching behavior for electro-optic directional couplers. The fabrication tolerance and the working bandwidth of the APPLN coupler can be increased by 2.7 and 2.4 times, respectively, over a conventional PPLN coupler.

 
 
15:35 - 15:50 Paper No.  2017-FRI-S0305-O004
Jin-Long Peng Noise performances of all-PM and non-PM fs Er-fiber lasers mode-locked by nonlinear polarization evolution
Jin-Long Peng;Wei-Jo Ting

The phase noise of the repetition rate of an all-polarization-maintaining (PM) and a non-PM fs Er-fiber lasers mode-locked by nonlinear polarization evolution (NPE) are measured and compared. Higher low frequency noise in the all-PM NPE mode-locked fiber laser is observed. Detailed studies will be discussed in the conference.

 
 
15:50 - 16:05 Paper No.  2017-FRI-S0305-O005
Ray-Ching Hong Resonance in modulation instability in photo-refractive crystals
Ray-Ching Hong;Chun-Yan Lin;Chien-Chung Jeng;Ray-Kuang Lee

By experimental measurements and theoretical analyses, we reveal the resonance for modulation instability in photo-refractive crystals though modulation in the external driving voltage. By changing the modulation frequency periodically, oscillation, damping, over-damping in the visibility of modulation instability are reported in the nonlinear optical systems.

 
 
16:05 - 16:20 Paper No.  2017-FRI-S0305-O006
Han-Lun Chiu Extremely Small Divergence Photonic Crystal Surface Emitting Lasers with ITO Top Cladding Layers
Han-Lun Chiu;Shen-Che Huang;Kuo-Bin Hong;Shao-Wan Lan;Tien-Chang Lu

We demonstrate an electrically-driven single-mode GaAs-based photonic crystal surface emitting laser with extremely small divergence at room temperature. Indium-Tin-Oxide is used as the top cladding layer, which simplifies the fabrication process significantly. Lasing characteristics such as threshold current density, lasing spectra, and near/far field patterns have been measured and discussed.

 
 
16:20 - 16:20 Paper No.  2017-FRI-S0305-O007
Osamu Wada Dual-Wavelength Microsquare Laser for THz Wave Generation
Osamu Wada;Hai-Zhong Weng;Jun-Yuan Han;Jin-Long Xiao;Yue-De Yang;Yong-Zhen Huang;Jin Li;Bing Xiong;Chang-Zheng Sun;Yi Luo

An AlGaInAs/InP microsquare dual wavelength laser has been fabricated and applied to THz emission by beating two modes. A microlaser combined with a uni-travelling-carrier photodiode has demonstrated stable emission at 103.2 GHz with a projected linewidth of 50 MHz. Linewidth analysis confirmed a strong correlation between two laser modes.