A simple approach to obtain 2.0 μm GaSb laser by using high-order distributed Bragg reflector
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    Abstract:

    GaSb-based DBR lasers with high-order Bragg gratings are fabricated without complex process.The16 th-order and 24 th-order Bragg gratings are fabricated with double-trench ridge waveguide by using standard contact optical lithography respectively.The 16 th-order Bragg grating laser achieves single longitudinal mode continuouswave (CW) operation at room temperature with side mode suppression ratio (SMSR) as high as 17.5 d B.The maximum single mode continuous-wave output power is more than 10 mW at room temperature.The laser shows a very excellent wavelength stability against injection current.The single spatial mode operation is maintained in the entire injection current range.The 24 th-order Bragg grating laser even shows a side mode suppression ratio up to22.5 d B at room temperature.The emission wavelength is around 2.0 μm.

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HUANG Shu-Shan, YANG Cheng-Ao, ZHANG Yu, XIE Sheng-Wen, LIAO Yong-Ping, CHAI Xiao-Li, XU Ying-Qiang, NIU Zhi-Chuan. A simple approach to obtain 2.0 μm GaSb laser by using high-order distributed Bragg reflector[J]. Journal of Infrared and Millimeter Waves,2018,37(6):653~656

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History
  • Received:February 12,2018
  • Revised:October 12,2018
  • Adopted:March 26,2018
  • Online: December 01,2018
  • Published: