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High energy and high efficiency 3.4 μ m extracavity KTA optical parametric oscillator

✍ Scribed by Q.B. Sun; H.J. Liu; N. Huang; C. Ruan; S.L. Zhu; W. Zhao

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
121 KB
Volume
8
Category
Article
ISSN
1612-2011

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✦ Synopsis

A high energy and high efficiency extracavity KTiOAsO4 (KTA) optical parametric oscillator (OPO) with excellent stability and beam quality, which is pumped by a Q-switched single-longitudinal-mode Nd:YAG laser, has been demonstrated based on a type II non-critical phase matching (NCPM) KTA crystal. The maximum pulse energy of 10 mJ at 3.467 μm is obtained with the repetition rate of 10 Hz and pulse width of 2 ns, corresponding to an optical-optical conversion efficiency of 14% from 1.064 μm to 3.467 μm. After one hour of investigation, the OPO output stability better than 4.5% rms has been obtained.

Mid-infrared energy, mJ

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