Acta Optica Sinica, Volume. 34, Issue 5, 530002(2014)
Laser Frequency Stabilization of 1560 nm Laser after Frequency Doubling to 780 nm with a Waveguide: Radio-Frequency Frequency-Modulation Spectroscopy versus Modulation Transfer Spectroscopy with Rb Atoms
By efficient frequency doubling of 1560 nm distributed feed back laser with a MgO:PPLN waveguide, the laser frequency is locked to the D2 hyperfine transition of 87Rb atoms via radio-frequency frequency modulation spectroscopy (RF-FMS) and modulation transfer spectroscopy (MTS). The theories, spectra and frequency locking results of the two schemes are compared. The root mean squares of frequency fluctuation with feedback using the two schemes are ±135 kHz and ±85 kHz, respectively, while it is 8~10 MHz for free running. This is owing to the better signal-to-noise ratio and completely no background for MTS. Utilizing MTS, a compact, robust 1.5 μm laser system for fiber-optic communication application is built.
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Han Yashuai, Wen Xin, Bai Jiandong, He Jun, Wang Junmin. Laser Frequency Stabilization of 1560 nm Laser after Frequency Doubling to 780 nm with a Waveguide: Radio-Frequency Frequency-Modulation Spectroscopy versus Modulation Transfer Spectroscopy with Rb Atoms[J]. Acta Optica Sinica, 2014, 34(5): 530002
Category: Spectroscopy
Received: Dec. 16, 2013
Accepted: --
Published Online: Apr. 18, 2014
The Author Email: Yashuai Han (hanyashuai@qq.com)