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Diode-pumped high efficient Tm:YLF laser output at 1908 nm with near-diffraction limited beam quality

✍ Scribed by X.M. Duan; B.Q. Yao; Y.J. Zhang; C.W. Song; L.L. Zheng; Y.L. Ju; Y.Z. Wang

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 75 KB
Volume: 5
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200810002

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✦ Synopsis

High power and high beam quality continuous wave Tm:YLF laser by the dual-end-pumped is presented in this letter. The highest output power reaches 21.3 W when the totally input pump power is 54.6 W. The optical conversion efficiency is 39.0% and the slope efficiency is 47.3%. With an F-P etalon in the cavity, the output center wavelength is tuned to 1908 nm with about 0.5 nm FWHM. With the optimal cavity, the beam quality factor M^2^ can be ∼ 1.1. As we know, our work is the first time to investigate the Tm:YLF laser output spectrum with an F-P etalon in the cavity, and acquire near-diffraction limited laser output.

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