نتایج جستجو برای: slow light

تعداد نتایج: 499506  

Journal: :Applied Physics Express 2021

We report on a novel high power vertical cavity surface emitting laser (VCSEL) with order shallow grating, which enables single mode operation even for 6 mm long devices. A of over 3 W is obtained under pulsed operations oxide aperture. fan-shape beam sub-degree narrow divergence up to injection currents 5 A. Thanks the low effective index slow-light modes in VCSEL structure, grating pitch 2.5 ...

Journal: :Physical Review Letters 2021

Low-dimensional nanostructured materials can guide light propagating with very low group velocity vg. However, this slow is significantly sensitive to unwanted imperfections in the critical dimensions of nanostructure. The backscattering mean free path, xi, average ballistic propagation length along waveguide, quantifies robustness against type structural disorder. This figure merit determines ...

2015
Ran Hao Xi-Liang Peng Er-Ping Li Yang Xu Jia-Min Jin Xian-Min Zhang Hong-Sheng Chen

We have systematically investigated the wideband slow light in two-dimensional material graphene, revealing that graphene exhibits much larger slow light capability than other materials. The slow light performances including material dispersion, bandwidth, dynamic control ability, delay-bandwidth product, propagation loss, and group-velocity dispersion are studied, proving graphene exhibits sig...

Journal: :The Review of Laser Engineering 2009

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