| 光谱学与光谱分析 |
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| Spatial Localized Distribution of Modes in Two-Dimension Random Medium |
| YAO Ke1, FENG Guo-ying1*, YANG Li-ling1, YI Jia-yu1, ZHOU Shou-huan1,2 |
1. College of Electronic Information of Sichuan University, Chengdu 610065, China
2. North China Research Institute of Electro-Optics, Beijing 100015, China |
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Abstract Based on the time dependent theory, FDTD algorithm was used to numerically solve Maxwell’s equations and rate equations. By dividing the two-dimension random medium, the emission spectra of different region under different pumping intensities were obtained. The calculated results show that the emission spectra of different region are different, the energy of emission is mainly distributed in some certain region, and the pumping efficiency is different. Also spatial extent overlap of modes is reproduced. With this method, the dependence of random distribution on lasing can be analyzed and it should be useful for the preparation of pseudo-random medium.
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Received: 2012-03-20
Accepted: 2012-07-02
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Corresponding Authors:
FENG Guo-ying
E-mail: guoing_feng@scu.edu.cn
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