Efficient intensity modulation due to surface acoustic waves on windows of the AlGaN/InGaN multiple quantum well laser

被引：0
|
作者：
Abrarov, SM
Kang, TW
Kim, TW
机构：
[1] Dongguk Univ, Quantum Funct Semicond Res Ctr, Seoul 100715, South Korea
[2] Hanyang Univ, Div Elect & Comp Engn, Adv Semicond Res Ctr, Seoul 133791, South Korea
来源：
OPTICS AND LASER TECHNOLOGY | 2004年 / 36卷 / 07期
关键词：
laser diode; intensity modulation; antireflection coating; surface acoustic waves;
D O I：
10.1016/j.optlastec.2004.01.005
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An alternative method for modulation of light generated by AlGaN/InGaN multiple quantum well laser with quartz antireflective (AR) coatings covering the resonator windows was modelled and studied theoretically. Disturbance of the piezoelectric coatings caused by surface acoustic waves (SAW) results in efficient intensity modulation of the laser beam. The model for the laser diode operating at DC demonstrates that the modulation factor can exceed 0.2 in sub-nanometer SAW displacement. For quarter-wave AR films, the carrier frequency of modulated beam has twice the frequency of SAW. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：595 / 600
页数：6
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