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Proceedings Paper

Intracavity optical parametric oscillator pumped by acousto-optically Q-switched Nd:YVO4 laser
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Paper Abstract

We present in this paper the highest, to our knowledge, average output power and conversion efficiency at 1572-nm signal wavelength for intracavity optical parametric oscillator (IOPO) inside acousto-optic Q-switched Nd:YVO4 laser end pumped by 15-W power fiber coupled diode. The Nd:YVO4 laser of the 147-mm long cavity gives 3-W average output power at 1064-nm wavelength at repetition rate 40 kHz. The additional separating mirror and x-cut KTP crystal form, with the output coupler high reflective at 1064-nm and partially transparent at 1572-nm wavelength flat-flat IOPO resonator of 35-mm length. We have achieved 3-ns duration pulses for 20-mm long KTP and 4-ns duration pulses for 30-mm KTP length, respectively. Up to 1.5 W of an average power at the signal wavelength for 40 kHz repetition rate of acousto-optic Q-switch was demonstrated. Due to intracavity gain guiding effect, diffraction limited signal beam was achieved. Maximum peak power of 10 kW was demonstrated. Conversion efficiency of 50% with respect to Q-switched output at 1064-nm wavelength and 11% with respect to diode pump power were achieved.

Paper Details

Date Published: 23 March 2005
PDF: 4 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611045
Show Author Affiliations
Waldemar Zendzian, Military Univ. of Technology (Poland)
Przemyslaw Wachulak, Military Univ. of Technology (Poland)
Jan Karol Jabczynski, Military Univ. of Technology (Poland)
Jacek Kwiatkowski, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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