IEEE Access (Jan 2021)

Stable Mode-Locked Operation With High Temperature Characteristics of a Two-Section InGaAs/GaAs Double Quantum Wells Laser

  • Zhongliang Qiao,
  • Xiang Li,
  • Jia Xubrian Sia,
  • Wanjun Wang,
  • Hong Wang,
  • Lin Li,
  • Zaijin Li,
  • Zhibin Zhao,
  • Yi Qu,
  • Xin Gao,
  • Baoxue Bo,
  • Chongyang Liu

DOI
https://doi.org/10.1109/ACCESS.2021.3051179
Journal volume & issue
Vol. 9
pp. 16608 – 16614

Abstract

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A monolithic two-section InGaAs/GaAs double quantum wells (DQWs) mode-locked laser (MLL) emitting at 1.06 μm is demonstrated. Stable mode locking operation is achieved up to 80 °C. The fundamental repetition rate is at ~9.51 GHz with a signal-to-noise ratio (SNR) of more than 55 dB, and up to the fourth harmonic at ~38.04 GHz is observed. The characteristic temperature (T0) of the laser and the influences of absorber bias voltage on T0 have been systematically investigated. From our findings, T0 shows a two-segment feature, and is slightly affected by the absorber bias voltage for photon saturation.

Keywords