Chinese Journal of Quantum Electronics ›› 2022, Vol. 39 ›› Issue (4): 583-590.doi: 10.3969/j.issn.1007-5461.2022.04.013

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Performance optimization of AlGaN-based deep ultraviolet laser diode with M-shaped hole barrier structure

ZHANG Aoxiang1, WANG Yao1, WANG Mengzhen1, WEI Shiqin1, WANG Fang1;2, LIU Yuhuai1;2;3*   

  1. ( 1 National Center for International Joint Research of Electronic Materials and Systems, School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; 2 Zhengzhou Way Do Electronics Technology Co. Ltd., Zhengzhou 450001, China; 3 Industrial Technology Research Institute Co. Ltd., Zhengzhou University, Zhengzhou 450001, China )
  • Received:2021-06-11 Revised:2021-07-17 Published:2022-07-28 Online:2022-07-28

Abstract: In order to reduce the hole leakage of deep ultraviolet laser diode (DUV-LD) in the n-type region effectively and optimize its performance, a novel M-shaped hole blocking layer (HBL) structure is proposed. By using Crosslight software,the rectangular, N-shaped and M-shaped HBL structures are simulated and compared. It is found that the M-shaped HBL structure can more effectively reduce the hole leakage in the n-type region, increase the radiation recombination rate in the quantum well, reduce the threshold voltage and threshold current of the laser diode, and improve the electro-optic conversion efficiency and output power of the laser diode. It is shown that the M-shaped HBL structure can effectively reduce the hole leakage of DUV-LD in the n-type region and optimize its performance.

Key words: laser techniques, deep ultraviolet laser diode, AlGaN, M-shaped hole blocking layer, hole leakage

CLC Number: