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Diode-pumped passively Q-switched Nd:GAGG laser at 938 nm with V3+:YAG saturable absorber

✍ Scribed by S.D. Liu; B.T. Zhang; J.L. He; H.W. Yang; J.L. Xu; F.Q. Liu; J.F. Yang; X.Q. Yang; H.T. Huang

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 117 KB
Volume: 7
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.201010055

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✦ Synopsis

The continuous wave (CW) and passively Qswitched Nd:Gd3AlxGa5-xO12 (Nd:GAGG) laser operation at 938 nm have been realized for the first time. The maximum CW output power of 0.44 W was obtained under the absorbed pump power of 8.54 W, corresponding to the slope efficiency of 7.8% and optical-to-optical efficiency of 5.2% respectively. A V 3+ :YAG saturable absorber crystal with the initial transmission of 97% was used for the passive Q-switching regime. The maximum average output power of 0.19 W was achieved with the minimum pulse width of 358 ns and Q-switched repetition rate of 116 kHz. The corresponding single pulse energy and pulse peak power were determined to be 1.6 μJ and 4.6 W, respectively.

PQS pulse width, ns

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