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<p>High-brightness yellow lasers are in high demand for applications such as atomic cooling and trapping, optogenetics, and sodium laser guide stars. Herein, we demonstrate the potential of Metal-Organic Chemical Vapor Deposition (MOCVD) for the rapid mass production of high-strain 1.2 μm InGaAs quantum well vertical external cavity surface emitting lasers (VECSELs). Two distinct growth strategies were explored, with a primary focus on enhancing crystal thermal stability and mitigating indium segregation. The as-grown gain chips achieved over 45 W of output power and a slope efficiency exceeding 50%. Furthermore, we verified the feasibility of generating yellow second harmonic generation (SHG), attaining a 590 nm CW power of ~6.2 W with a slope efficiency of 17%. The beam quality factor (<i>M</i>²) was &lt;1.1, approaching diffraction-limited performance, corresponding to a brightness of ~1.65 GW cm<sup>−2</sup> sr<sup>−1</sup>. Overall, these investigations not only expand the performance envelope of MOCVD-grown semiconductor lasers but also deepen the understanding of indium segregation behaviors.</p>

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Over 1.65 GW cm−2 sr−1 brightness 590 nm yellow second-harmonic generation in MOCVD-grown high-strain InGaAs/GaAs quantum well VECSEL

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月10日

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  • Zhicheng Zhang,
  • Wenbo Zhan,
  • Yao Xiao,
  • Chen Luo,
  • Hao Zhou,
  • Wenfan Yang,
  • Yang Cheng,
  • Hao Yu,
  • Quanling Li,
  • Xiao Li,
  • Chaofan Zhang,
  • Jun Wang

摘要

High-brightness yellow lasers are in high demand for applications such as atomic cooling and trapping, optogenetics, and sodium laser guide stars. Herein, we demonstrate the potential of Metal-Organic Chemical Vapor Deposition (MOCVD) for the rapid mass production of high-strain 1.2 μm InGaAs quantum well vertical external cavity surface emitting lasers (VECSELs). Two distinct growth strategies were explored, with a primary focus on enhancing crystal thermal stability and mitigating indium segregation. The as-grown gain chips achieved over 45 W of output power and a slope efficiency exceeding 50%. Furthermore, we verified the feasibility of generating yellow second harmonic generation (SHG), attaining a 590 nm CW power of ~6.2 W with a slope efficiency of 17%. The beam quality factor (M²) was <1.1, approaching diffraction-limited performance, corresponding to a brightness of ~1.65 GW cm−2 sr−1. Overall, these investigations not only expand the performance envelope of MOCVD-grown semiconductor lasers but also deepen the understanding of indium segregation behaviors.