单立体VECSEL用于稳定的kHz线宽
Optics express
|November 29, 2023
概括
我们开发了一个紧的,可调节的单体VECSEL,用于超窄的线宽. 这种新型激光器实现了低于kHz的线宽,为先进应用提供了显著的降噪.
科学领域:
- 半导体激光物理 半导体激光物理
- 量子光学就是量子光学.
- 光子工程的工程学是光子学.
背景情况:
- 垂直外腔表面发射激光器 (VECSEL) 对于要求超连贯性和低噪声的应用至关重要.
- 目前的VECSEL通常依赖于复杂的空隙共振器来实现所需的性能.
- 实现长时间的洞内光子寿命是A级低噪声系统和功率扩展的关键.
研究的目的:
- 开发一个紧的,电子调节的,单立体腔体VECSEL.
- 通过抑制环境噪音来实现超窄的自由运行线宽.
- 为了展示一个新的VECSEL架构,提高稳定性和性能.
主要方法:
- 将一个带有集成DBR的增益结构光学粘合到一个无空隙的化晶体镜共振器上.
- 使用具有完全内部反射的单立体腔,以提高稳定性.
- 通过稳定温度和剪切压电传感器实现无模式跳转的波长调节.
主要成果:
- 在ms的时间尺度上实现了分kHz的自由运行线宽.
- 在1秒的时间采样中证明了<1.9kHz的线宽,这是两个数量级的改善.
- 单体VECSEL比NPROs具有优势,包括定制的波长和没有放松振荡.
结论:
- 单体VECSEL提供了一个强大的,紧的,稳定的超连贯激光源.
- 这项技术具有功率可扩展性,可适应各种波长 (可见到中红外).
- 能够在远程计量学和光学时钟等量子技术中实现现实应用.
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