Frequency doubling of 1560nm diode laser via PPLN and PPKTP crystals and frequency stabilization to rubidium absorption line

Shanlong Guo; Jianfeng Yang; Baodong Yang; Tiancai Zhang; Junmin Wang

doi:10.1117/12.871688

4 November 2010 Frequency doubling of 1560nm diode laser via PPLN and PPKTP crystals and frequency stabilization to rubidium absorption line

Shanlong Guo, Jianfeng Yang, Baodong Yang, Tiancai Zhang, Junmin Wang

Author Affiliations +

Proceedings Volume 7846, Quantum and Nonlinear Optics; 784619 (2010) https://doi.org/10.1117/12.871688
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Shanlong Guo, Jianfeng Yang, Baodong Yang, Tiancai Zhang, and Junmin Wang "Frequency doubling of 1560nm diode laser via PPLN and PPKTP crystals and frequency stabilization to rubidium absorption line", Proc. SPIE 7846, Quantum and Nonlinear Optics, 784619 (4 November 2010); https://doi.org/10.1117/12.871688

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