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Proceedings Paper

Frequency doubling of cw 1560nm laser with single-pass, double-pass and cascaded MgO:PPLN crystals and frequency locking to Rb D2 line
Author(s): Shanlong Guo; Junmin Wang; Yashuai Han; Jun He
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Paper Abstract

We implemented and compared three different quasi-phase-matching (QPM) frequency-doubling configurations for 1560nm laser of single pass, double pass and cascade by using of MgO:PPLN bulk crystals. Also a fiber-pigtailed MgO:PPLN waveguide is utilized in single-pass frequency doubling configuration in the case of low-power 1560nm fundamental wave (FW) laser. Employing the second-harmonic wave (SHW) output at 780nm and a rubidium (Rb) vapor cell, we also performed the modulation transfer spectroscopy (MTS). MTS is insensitive to the fluctuation of laser intensity and the temperature drift of atomic vapor cell, so it is a good choice for laser frequency stabilization against atomic hyperfine transition line. The laser frequency stability is significantly improved after being locked via MTS scheme compared with the free-running case.

Paper Details

Date Published: 8 May 2013
PDF: 7 pages
Proc. SPIE 8772, Nonlinear Optics and Applications VII, 87721B (8 May 2013); doi: 10.1117/12.2016839
Show Author Affiliations
Shanlong Guo, Shanxi Univ. (China)
Junmin Wang, Shanxi Univ. (China)
Yashuai Han, Shanxi Univ. (China)
Jun He, Shanxi Univ. (China)

Published in SPIE Proceedings Vol. 8772:
Nonlinear Optics and Applications VII
Mario Bertolotti; Joseph Haus; Alexei M. Zheltikov, Editor(s)

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