Session Index

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.