中国物理B ›› 2017, Vol. 26 ›› Issue (7): 74208-074208.doi: 10.1088/1674-1056/26/7/074208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Spectral dynamical behavior in two-section, quantum well, mode-locked laser at 1.064μm

Si-Hang Wei(魏思航), Ben Ma(马奔), Ze-Sheng Chen(陈泽升), Yong-Ping Liao(廖永平), Hong-Yue Hao(郝宏玥), Yu Zhang(张宇), Hai-Qiao Ni(倪海桥), Zhi-Chuan Niu(牛智川)   

  1. 1 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2016-11-14 修回日期:2017-02-21 出版日期:2017-07-05 发布日期:2017-07-05
  • 通讯作者: Hai-Qiao Ni, Zhi-Chuan Niu E-mail:nihq@semi.ac.cn;zcniu@semi.ac.cn
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos.2013CB933304 and 2012CB932701),the National Natural Science Foundation of China (Grant Nos.61274125 and 61435012),and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No.XDB01010200).

Spectral dynamical behavior in two-section, quantum well, mode-locked laser at 1.064μm

Si-Hang Wei(魏思航)1,2, Ben Ma(马奔)1,2, Ze-Sheng Chen(陈泽升)1,2, Yong-Ping Liao(廖永平)1,2, Hong-Yue Hao(郝宏玥)1,2, Yu Zhang(张宇)1,2, Hai-Qiao Ni(倪海桥)1,2, Zhi-Chuan Niu(牛智川)1,2   

  1. 1 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2016-11-14 Revised:2017-02-21 Online:2017-07-05 Published:2017-07-05
  • Contact: Hai-Qiao Ni, Zhi-Chuan Niu E-mail:nihq@semi.ac.cn;zcniu@semi.ac.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos.2013CB933304 and 2012CB932701),the National Natural Science Foundation of China (Grant Nos.61274125 and 61435012),and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No.XDB01010200).

摘要: In this study, two-section mode-locked semiconductor lasers with different numbers of quantum wells and different types of waveguide structures are made. Their ultrashort pulse features are presented. The spectral dynamical behaviors in these lasers are studied in detail. In the simulation part, a two-band compressive-strained quantum well (QW) model is used to study thermally induced band-edge detuning in the amplifier and saturable absorber (SA). A sudden blue shift in laser spectrum is expected by calculating the peak of the net gain. In the experiment part, the sudden blue shift in the emission spectrum is observed in triple QW samples under certain operating conditions but remains absent in single QW samples. Experimental results reveal that blue shift phenomenon is connected with the difference between currents in two sections. Additionally, a threshold current ratio for blue-shift is also demonstrated.

关键词: mode-locked laser, saturable absorber, blue-shift, thermal effect

Abstract: In this study, two-section mode-locked semiconductor lasers with different numbers of quantum wells and different types of waveguide structures are made. Their ultrashort pulse features are presented. The spectral dynamical behaviors in these lasers are studied in detail. In the simulation part, a two-band compressive-strained quantum well (QW) model is used to study thermally induced band-edge detuning in the amplifier and saturable absorber (SA). A sudden blue shift in laser spectrum is expected by calculating the peak of the net gain. In the experiment part, the sudden blue shift in the emission spectrum is observed in triple QW samples under certain operating conditions but remains absent in single QW samples. Experimental results reveal that blue shift phenomenon is connected with the difference between currents in two sections. Additionally, a threshold current ratio for blue-shift is also demonstrated.

Key words: mode-locked laser, saturable absorber, blue-shift, thermal effect

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
42.60.Fc (Modulation, tuning, and mode locking) 78.55.Cr (III-V semiconductors)