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Proceedings Paper

Frequency doubling of 1560nm diode laser via PPLN and PPKTP crystals and frequency stabilization to rubidium absorption line
Author(s): Shanlong Guo; Jianfeng Yang; Baodong Yang; Tiancai Zhang; Junmin Wang
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Paper Abstract

In our experiment, a polarization-maintaining (PM) fiber-pigtailed butterfly-sealed 1560nm distributed-feedback (DFB) laser diode is amplified by a 5-Watt EDFA, then a multiple-period PPLN crystal (1mm×10mm×20mm) and a single-period PPKTP crystal (1mm×2mm×30mm) are utilized to perform SHG via single pass configuration. The second harmonic power of ~ 239 mW@780 nm for PPLN and ~ 210 mW@780 nm for PPKTP are obtained with ~5W@1560 nm laser input, corresponding to SHG efficiency of ~ 5.2% for PPLN and ~ 4.4% for PPKTP, respectively. Finally the 1560 nm laser diode's frequency is locked to rubidium absorption line via SHG and rubidium absorption spectroscopy, the laser frequency drift for free-running case is ~ 56 MHz in 30 s, the residual frequency after being locked drift is ~ ± 3.5 MHz.

Paper Details

Date Published: 4 November 2010
PDF: 6 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 784619 (4 November 2010); doi: 10.1117/12.871688
Show Author Affiliations
Shanlong Guo, Shanxi Univ. (China)
Jianfeng Yang, Shanxi Univ. (China)
Baodong Yang, Shanxi Univ. (China)
Tiancai Zhang, Shanxi Univ. (China)
Junmin Wang, Shanxi Univ. (China)

Published in SPIE Proceedings Vol. 7846:
Quantum and Nonlinear Optics
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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