Single Mode 2 μm GaSb Based Laterally Coupled Distributed Feedback Quantum-Well Laser Diodes with Metal Grating
SONG Yu-Zhi, ZHANG Yu, SONG Jia-Kun, LI Kang-Wen, ZHANG Zu-Yin, XU Yun** , SONG Guo-Feng, CHEN Liang-Hui
Nano-Optoelectronics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
Abstract ：Room-temperature operation of a GaSb based laterally coupled distributed feedback quantum-well laser diode emitting at 2 μm is demonstrated. The device exhibits single longitudinal mode characteristic as a result of the first order Cr-Bragg gratings alongside the narrow ridge waveguide. We design the laser structure to obtain a critical coupling condition corresponding to a coupling coefficient of 12 cm?1 . For a 1-mm-long uncoated laser diode with a 3-μm-wide stripe, a single mode output spectrum with side mode suppression ratio as high as 28.5 dB is achieved, and the maximum single mode continuous-wave output power is about 11 mW at room temperature.
收稿日期: 2015-04-07
出版日期: 2015-07-30
引用本文:
. [J]. 中国物理快报, 2015, 32(07): 74206-074206.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/32/7/074206
或
https://cpl.iphy.ac.cn/CN/Y2015/V32/I07/74206
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2015, Vol. 32 
