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Proceedings Paper

Performance comparison of nonlinear crystals for frequency doubling of an 894nm Cs vapor laser
Author(s): B. V. Zhdanov; M. K. Shaffer; Y. Lu; B. Naumann; T. Genda; R. J Knize
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Paper Abstract

An examination of the efficiencies of three commonly used nonlinear crystals (PPKTP, LBO, and BiBO) when generating second harmonic of a Cesium laser is presented. The experiment investigates both the intracavity and single pass second harmonic generation of 895 nm Cs laser light when operating in quasi-CW and in CW modes and pumped by several watts. A degradation of the conversion efficiencies for each crystal was observed when high fundamental powers or a high duty cycle of the pump were used. For a Cs laser operating at 894nm, PPKTP is found to be the optimal crystal for intracavity SHG in both pulsed and CW modes when operating at SHG powers of several watts. At higher powers, however, the increased absorption coefficient of PPKTP at 447nm, compared to that of BiBO or LBO, may become significant to where another crystal will be more appropriate for this application. Maximum blue light power obtained with PPKTP crystal was about 1.5W in CW mode and 2.5W in QCW.

Paper Details

Date Published: 4 November 2010
PDF: 7 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460B (4 November 2010); doi: 10.1117/12.871808
Show Author Affiliations
B. V. Zhdanov, U.S. Air Force Academy (United States)
M. K. Shaffer, U.S. Air Force Academy (United States)
Y. Lu, U.S. Air Force Academy (United States)
B. Naumann, U.S. Air Force Academy (United States)
T. Genda, U.S. Air Force Academy (United States)
R. J Knize, U.S. Air Force Academy (United States)

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

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