Abstract
A technique for determining the optical path difference (OPD) between two Raman beams using a frequency-modulated continuous-wave method is investigated. This approach greatly facilitates the measurement and adjustment of the OPD when tuning the OPD is essential to minimize the effects of the diode laser’s phase noise on Raman lasers. As a demonstration, the frequencies of the beat note with different OPDs are characterized and analyzed. When the measured beat frequency is 0.367 Hz, the OPD between Raman beams is zero. The phase noise of the Raman laser system after implementation of zeroing of the OPD is also measured.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Jesse Zheng
Appl. Opt. 45(12) 2723-2730 (2006)
Jesse Zheng
Appl. Opt. 43(21) 4189-4198 (2004)
Kai Wang, Zhanwei Yao, Runbing Li, Sibin Lu, Xi Chen, Jin Wang, and Mingsheng Zhan
Appl. Opt. 55(5) 989-992 (2016)