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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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混合集成的窄线宽半导体激光器

Baoshuai Li, Weiqiang Wang, Honglei Yang

    Applied optics
    |September 14, 2023
    PubMed
    概括

    本研究介绍了一种混合集成激光器,使用光学负反来实现狭窄的线宽. 新的激光设计显著减少了计量学和传感应用的线宽.

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    科学领域:

    • 光子学和光学工程 光子学和光学工程
    • 半导体激光器半导体激光器
    • 集成光学 集成光学 集成光学

    背景情况:

    • 窄线宽激光器对于测量和传感等先进光学系统至关重要.
    • 紧而高效的激光源对于这些应用具有很高的需求.

    研究的目的:

    • 为了演示一种混合集成激光器,其线宽显著减少.
    • 探索光学负反对于激光线宽压缩的潜力.

    主要方法:

    • 一种混合集成方法,将分布式反 (DFB) 激光二极管与芯片上的微共振器相结合.
    • 实现光学负反方案,将光线合回到DFB激光腔中.
    • 使用具有高Q因子 (0.815万) 的微共振器.

    主要成果:

    • 实现了线宽从2 MHz减少到6 kHz,其系数为333x或25.2 dB.
    • 保持了原始DFB激光二极管的激光效率.
    • 理论分析表明,通过精确控制脱调和相位延迟,可以进一步提高性能.

    结论:

    • 展示的混合集成激光器为窄线宽应用提供了具有成本效益和可生产性的解决方案.
    • 这项技术在连贯光学系统中具有广泛的前景,包括计量学,传感和光学微波生成.
    • 精确控制光学参数可以进一步提高激光器的性能.

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