Coherent random lasing in diffusive resonant media

被引：2
|
作者：
Uppu, Ravitej [1 ]
Tiwari, Anjani Kumar [1 ]
Mujumdar, Sushil [1 ]
机构：
[1] Tata Inst Fundamental Res, Nanoopt & Mesoscop Opt Lab, Bombay 400005, Maharashtra, India
来源：
FOURTH INTERNATIONAL WORKSHOP ON THEORETICAL AND COMPUTATIONAL NANOPHOTONICS (TACONA-PHOTONICS 2011) | 2011年 / 1398卷
关键词：
Random lasers; Wave propagation in random media; Scattering; Light diffusion; RANDOM LASERS; FEEDBACK;
D O I：
10.1063/1.3644226
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We investigate diffusive propagation of light and consequent random lasing in a medium comprising resonant spherical scatterers. A Monte-Carlo calculation based on photon propagation via three-dimensional random walks is employed to obtain the dwell-times of light in the system. We compare the inter-scatterer and intra-scatterer dwell-times for representative resonant and non-resonant wavelengths. Our results show that more efficient random lasing, with intense coherent modes, is obtained when the gain is present inside the scatterers. Further, a larger reduction in frequency fluctuations is achieved by the system with intra-scatterer gain.
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收藏
页数：3
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