Two schemes of modulation-free frequency stabilization of grating-external-cavity diode laser via cesium sub-Doppler spectra

Shubin Yan; Zhijing Du; Haijing Yang; Tiancai Zhang; Junmin Wang

doi:10.1117/12.667166

23 December 2005 Two schemes of modulation-free frequency stabilization of grating-external-cavity diode laser via cesium sub-Doppler spectra

Shubin Yan, Zhijing Du, Haijing Yang, Tiancai Zhang, Junmin Wang

Author Affiliations +

Proceedings Volume 6028, ICO20: Lasers and Laser Technologies; 602811 (2005) https://doi.org/10.1117/12.667166
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

We report two methods of modulation-free frequency stabilization of a laser to sub-Doppler atomic absorption line. The first one employs the magnetically induced sub-Doppler dichroism in cesium vapor cell based on Zeeman effect. The second one utilizes two acousto-optical modulators (AOM) as well as sub-Doppler spectra to generate dispersion-like signal. We compared the residual frequency fluctuation in preliminary stabilization with the case of free running. These two schemes can avoid the additional frequency noise as well as intensity noise due to the direct frequency dither on laser source.

Citation Download Citation

Shubin Yan, Zhijing Du, Haijing Yang, Tiancai Zhang, and Junmin Wang "Two schemes of modulation-free frequency stabilization of grating-external-cavity diode laser via cesium sub-Doppler spectra", Proc. SPIE 6028, ICO20: Lasers and Laser Technologies, 602811 (23 December 2005); https://doi.org/10.1117/12.667166

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