Random lasing in strongly disordered medium |
| |
Authors: | Ke Yao Guoying Feng Liling Yang Jiayu Yi Yingsong Song and Shouhuan Zhou |
| |
Affiliation: | 1,3 1 Department of Opto-Electronics, Sichuan University, Chengdu 610064, China 2 Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China 3 North China Research Institute of Electro-Optics, Beijing 100015, China |
| |
Abstract: | Using the time-dependent theory, we calculate the random-laser emission spectra in a two-dimensional strongly disordered medium. The calculation results show that in low dimensional systems, such as thin- film disordered media and planar waveguides, the larger the difference of the refractive indices between the scattering and background media, the smaller the lasing threshold. We also reveal the existence of multi-mode survival and mode competition. We experimentally obtain the emission spectra of a dye solution with Al particles doped at different pumping energies, and the experimental results agree well with the calculated ones. |
| |
Keywords: | |
本文献已被 CNKI 维普 等数据库收录! |
|