重庆大学黄礼刚团队研究了自适应分布反馈半导体激光器。相关论文于2025年4月9日发表在《物理评论A》杂志上。

为了解决外腔半导体激光器波长适应性的困难，外腔分布反馈已被证明是实现自适应窄线宽半导体激光器的有效方法。对于自适应半导体激光器的结构设计和精确制造，需要探索基于分布式反馈的激光线宽压缩原理。

研究组提出了一个理论模型，用于分析自适应分布反馈半导体激光器的工作机理。理论和实验结果表明，实现自适应线宽压缩需要数十个或更多的反馈点。在足够的反馈点的基础上，增加反馈长度和比率可以实现超窄的激光线宽和高侧模抑制比。这项工作为探索自适应窄线宽半导体激光器的理想配置提供了一种模型分析工具，为高性能半导体激光器的设计和制造铺平了道路。

附：英文原文

Title: Adaptive distributed-feedback semiconductor laser

Author: Chaoze Zhang, Tianyu Guan, Ligang Huang, Yujia Li, Laiyang Dang, Yuqin Mao, Lei Gao, Leilei Shi, Guolu Yin, Chaoyang Gong, Tao Zhu

Issue&Volume: 2025/04/09

Abstract: To solve the difficulty in wavelength adaptability of external-cavity semiconductor lasers, external-cavity distributed feedback has been proven to be an effective method to achieve adaptive narrow-linewidth semiconductor lasers. For the structural design and precise manufacturing of adaptive semiconductor lasers, the principle of laser linewidth compression based on distributed feedback needs to be explored. In this article, we propose a theoretical model for analyzing the operational mechanism of the adaptive distributed-feedback semiconductor laser. Theoretical and experimental results show that achieving adaptive linewidth compression requires tens of or more feedback points. On the basis of sufficient feedback points, increasing the feedback length and ratio can achieve an ultranarrow laser linewidth and high side-mode suppression ratio. This work provides a model analysis tool for exploring the ideal configuration of adaptive narrow-linewidth semiconductor lasers, which paves the way for the design and manufacturing of high-performance semiconductor lasers.

DOI: 10.1103/PhysRevA.111.043511

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.043511