中国激光, 2015, 42 (8): 0802012, 网络出版: 2022-09-24
利用全光纤环形谐振器实现对单频激光器频率噪声的抑制
Frequency Noise Suppression of Single-Frequency Laser by All-Fiber Ring Resonator
激光器 激光稳频 光纤环形谐振器 频率噪声 饱和吸收光谱 lasers laser stabilization fiber ring resonator frequency noise saturated absorption spectroscopy
摘要
给出了利用全光纤环形谐振器实现对激光器频率噪声抑制的原理和实验结果。采用Pound-Drever-Hall 的方法对锁定在铷原子吸收谱线上的激光进行稳频，实现了饱和吸收光谱与光纤环形谐振器双回路锁定。通过外差式马赫-曾德干涉仪来测量锁定后的激光器频率噪声发现，在频率100 Hz 时，光纤环形谐振器对频率噪声的抑制度超过了40 dB。在1 Hz处，稳频激光器的频率噪声小于100 dB Hz2 /Hz ，其抑制度达到60 dB。
Abstract
The principle and experimental results of laser frequency noise suppression by all- fiber ring resonator is provided. A saturated absorption spectroscopy and fiber ring resonator double-loop-stabilization for laser frequency is realized by Pound- Drever- Hall technique. The frequency noise of stabilized laser is measured by a heterodyne Mach- Zehnder interferometer and obtain the frequency noise suppression larger than 40 dB when Fourier frequency f < 100 Hz . At 1 Hz offset, the frequency noise power spectral density of stabilized laser is less than 100 dB Hz2 /Hz and the frequency noise suppression is 60 dB.
胡永奇, 董靖, 黄军超, 王秀梅, 成华东, 李唐, 刘亮. 利用全光纤环形谐振器实现对单频激光器频率噪声的抑制[J]. 中国激光, 2015, 42(8): 0802012. Hu Yongqi, Dong Jing, Huang Junchao, Wang Xiumei, Cheng Huadong, Li Tang, Liu Liang. Frequency Noise Suppression of Single-Frequency Laser by All-Fiber Ring Resonator[J]. Chinese Journal of Lasers, 2015, 42(8): 0802012.
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