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完全相位稳定的1GHz交钥匙频率在1.56微米

Daniel M B Lesko^1,2,3, Alexander J Lind^1,4,3, Nazanin Hoghooghi^5,3

¹Time and Frequency Division, NIST, 325 Broadway, Boulder, Colorado 80305, USA.

OSA continuum

|January 15, 2025

概括

我们稳定了用于高速光谱学的商用1GHz光学频率. 这种低噪音系统实现了精确的测量,有利于需要快速数据采集和高分辨率的应用程序.

科学领域:

量子光学是一种量子光学.
频谱学是一种光谱学.
激光物理激光物理

背景情况:

光学频率 (OFC) 对于精确测量至关重要.
千兆赫兹的重复率提高了双光谱学中的光谱采集速度.
高重复率,低噪音的OFC是需要高级应用的.

研究的目的:

为了稳定和表征商用1GHz模式锁定激光器,用于OFC应用.
为了展示一个强大的,使用现成元件的自我参考系统.
为了实现更快,高分辨率的光谱测量.

主要方法:

使用光纤放大和光谱扩展稳定光学Công,CEO频率 (fCEO).
对于fCEO和节拍音稳定的剩余相位噪声的表征.
使用商用1GHz模式锁定激光在电信波长运行.

主要成果:

实现了fCEO的稳定,其余相位噪声为438mrad.
在模式和CW激光器之间稳定了节拍,其余相位噪声为41mrad.
展示了高信号噪音比率检测.

结论:

一个交钥匙,自我引用的1GHz光学频率系统被成功稳定和特征化.
该系统使用保持偏振的纤维组件,以提高强度.
这种强大的系统适用于需要高重复率的低噪音频率应用.

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