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坚固的自我注射锁定到一个非聚焦的单体Fabry-Perot腔

Anatoliy Savchenkov, Wei Zhang, Vladimir Iltchenko

|March 15, 2024

概括

两个半导体激光器被有效地锁定在Fabry-Perot腔中,显著提高了低噪音微波信号生成的光谱纯度. 该技术为高频无线电频率信号生成和光学频率指引提供了一个紧的解决方案.

科学领域:

* * 物理学物理
* 光学工程是指光学工程.
* 电气工程电气工程

背景情况:

*产生低噪音的微波信号对于先进的通信和传感系统至关重要.
* 半导体激光器提供了紧且具有成本效益的解决方案,但通常会受到相位噪声的影响.
* 法布里-佩罗洞可以通过光学反来提高激光谱纯度.

研究的目的:

* 为了证明两个半导体激光器对一个单一的法布里-佩罗洞穴的有效同时自我注射锁定.
*使用锁定激光器和快速光二极管产生低噪音的微波信号.
* 评估光谱纯度的提高和相位噪声性能.

主要方法:

*使用一个独立的单立式非聚焦的法布里-佩罗腔.
* 实现了两个半导体激光器的同时自我注射锁定到高阶空腔模式.
*采用快速光二极管用于微波信号生成和相位噪声测量.

主要成果:

* 激光光谱纯度的整体改善超过80dB.
* 测量的单侧频段相位噪声为-110 dBc/Hz,用于X-到W频段的信号.
* 确定了空腔的热折射噪声作为相位噪声的主要限制因素.

结论:

* 展示的空腔激光配置能够有效生成光谱纯净的微波信号.
* 该系统表现出卓越的相位噪声性能,适用于苛刻的射频应用.
* 紧而坚固的设计对高频射频信号生成和光学频率指引有希望.

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