Laser frequency stabilization for continuous-wave laser enhanced direct frequency comb spectroscopy system

被引：0
|
作者：
Zhang, Yichi [1 ,2 ]
Fan, Hongyan [1 ,2 ]
机构：
[1] Shanxi Univ, Coll Phys & Elect Engn, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan, Shanxi, Peoples R China
来源：
LASER PHYSICS | 2024年 / 34卷 / 07期
基金：
中国国家自然科学基金;
关键词：
direct frequency comb spectroscopy; broadband pulse laser; laser frequency stabilization; 2-PHOTON TRANSITIONS;
D O I：
10.1088/1555-6611/ad4bb1
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present the observation of high-precision direct frequency comb spectroscopy excited by an optical frequency comb and a diode laser when each of them drives one step of the two-photon transition in a rubidium vapor system. We demonstrate a stable and low noise system by directly locking the frequency of the continuous-wave laser to the rubidium two-photon transition. The frequency stability of a diode laser via the two-photon transition locking technique is 8 x 10-11 for a 1 s gate time and 3 x 10-12 for 1000 s. It proves to be a potential technique for locking the diode laser with high stability. We chose a suitable optical frequency comb pulse and the frequency of the diode laser to fulfill the double-resonance condition. These techniques eliminate spectrum line overlap and would benefit spectroscopy measurements.
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页数：6
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