Tuning of random lasers by means of external magnetic fields based on the Voigt effect

被引：9
作者：
Ardakani, Abbas Ghasempour [1 ]
Mandavi, Seyed Mohammad [1 ,2 ]
Bahrampour, Ali Reza [1 ]
机构：
[1] Sharif Univ Technol, Dept Phys, Tehran, Iran
[2] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran
来源：
OPTICS AND LASER TECHNOLOGY | 2013年 / 47卷
关键词：
Voigt effect; FDTD method; Semiconductor layer; TUNABLE PHOTONIC CRYSTALS; LIGHT;
D O I：
10.1016/j.optlastec.2012.08.025
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
It has been proposed that emission spectrum of random lasers with magnetically active semiconductor constituents can be made tunable by external magnetic fields. By employing the FDTD method, the spectral intensity and spatial distribution of electric field are calculated in the presence of an external magnetic field. It is numerically shown that due to the magneto-optical Voigt effect, the emission spectrum of a semiconductor-based random laser can be made tunable by adjusting the external magnetic field. The effect of magnetic field on the localization length of the laser modes is investigated. It is also shown that the spatial distribution of electric field exhibited remarkable modification with variation of magnetic field. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：121 / 126
页数：6
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