Efficient light coupling into sub-micrometer rib and strip SOI waveguides

2002 ◽  
Author(s):  
D. Pascal ◽  
S. Lardenois ◽  
E. Cassan ◽  
A. Koster ◽  
S. Laval ◽  
...  
Keyword(s):  
Light Coupling

scholarly journals Giant enhancement of THz-frequency optical nonlinearity by phonon polariton in ionic crystals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yao Lu ◽  
Qi Zhang ◽  
Qiang Wu ◽  
Zhigang Chen ◽  
Xueming Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Nonlinearity ◽  
Ionic Crystals ◽  
Nonlinear Optical Susceptibility ◽  
Time Resolved ◽  
Light Coupling ◽  
Tremendous Progress ◽  
Fundamental Research ◽  
Ionic Contribution ◽  
Time Resolved Imaging

AbstractThe field of nonlinear optics has grown substantially in past decades, leading to tremendous progress in fundamental research and revolutionized applications. Traditionally, the optical nonlinearity for a light wave at frequencies beyond near-infrared is observed with very high peak intensity, as in most materials only the electronic nonlinearity dominates while ionic contribution is negligible. However, it was shown that the ionic contribution to nonlinearity can be much larger than the electronic one in microwave experiments. In the terahertz (THz) regime, phonon polariton may assist to substantially trigger the ionic nonlinearity of the crystals, so as to enhance even more the nonlinear optical susceptibility. Here, we experimentally demonstrate a giant second-order optical nonlinearity at THz frequency, orders of magnitude higher than that in the visible and microwave regimes. Different from previous work, the phonon-light coupling is achieved under a phase-matching setting, and the dynamic process of nonlinear THz generation is directly observed in a thin-film waveguide using a time-resolved imaging technique. Furthermore, a nonlinear modification to the Huang equations is proposed to explain the observed nonlinearity enhancement. This work brings about an effective approach to achieve high nonlinearity in ionic crystals, promising for applications in THz nonlinear technologies.

Light coupling structures and switches for plasmonic coaxial waveguides

2021 ◽  
Vol 129 (19) ◽  
pp. 193103
Author(s):  
Amirreza Mahigir ◽  
Georgios Veronis
Keyword(s):  
Light Coupling ◽  
Coaxial Waveguides

scholarly journals Energy flow in light-coupling masks for lensless optical lithography

1998 ◽  
Vol 3 (7) ◽  
pp. 280 ◽  
Author(s):  
Olivier J. F. Martin ◽  
Nicolas B. Piller ◽  
Heinz Schmid ◽  
Hans Biebuyck ◽  
Bruno Michel
Keyword(s):  
Energy Flow ◽  
Optical Lithography ◽  
Light Coupling

Polarization dependence of the light coupling to surface plasmons in an Ag nanoparticle & Ag nanowire system

2014 ◽  
Vol 23 (11) ◽  
pp. 117302
Author(s):  
Chao-Jie Yang ◽  
Hua-Bo Zhao ◽  
Pei-Pei Wang ◽  
Jie Li ◽  
Peng Tang ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Polarization Dependence ◽  
Ag Nanoparticle ◽  
Light Coupling ◽  
Ag Nanowire

scholarly journals Efficient Active-to-Passive Light Coupling of InGaAsP/InP Laser Using Subwavelength Coupler

2013 ◽  
Vol 5 (6) ◽  
pp. 6602408-6602408
Author(s):  
Xiaojun Liang ◽  
Jianwei Mu ◽  
Xun Li ◽  
Yanping Xi
Keyword(s):  
Light Coupling

Two-dimensional periodic grating light coupling in quantum well infrared photodetectors

1997 ◽  
Author(s):  
Sumith V. Bandara ◽  
Sarath D. Gunapala ◽  
John K. Liu ◽  
Winn Hong ◽  
Jin S. Park
Keyword(s):  
Quantum Well ◽  
Infrared Photodetectors ◽  
Two Dimensional ◽  
Quantum Well Infrared Photodetectors ◽  
Periodic Grating ◽  
Light Coupling

Exciton–Light Coupling in Quantum Wells in the Presence of Inhomogeneous Broadening

1997 ◽  
Vol 164 (1) ◽  
pp. 189-192 ◽  
Author(s):  
A. V. Kavokin ◽  
M. R. Vladimirova ◽  
L. C. Andreani ◽  
G. Panzarini ◽  
J. J. Baumberg
Keyword(s):  
Quantum Wells ◽  
Inhomogeneous Broadening ◽  
Light Coupling
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