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Proceedings Paper

High-average-power TEM00-mode Nd:YAG laser system for nonlinear frequency conversion
Author(s): William T. Lotshaw; Josef R. Unternahrer; Mark J. Kukla
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Paper Abstract

A cw-pumped Nd:YAG oscillator followed by a cw-pumped, multipass, travelling wave amplifier using a face-pumped, total internal reflection (TIR) Nd:YAG slab as the gain element, has produced a TEM00, diffraction limited beam with up to 150 W of average power. The oscillator has been operated in the Q-switched, modelocked, and Q- switched/modelocked output formats. When the oscillator is Q-switched at a rate of 12 kHz, the system produced over 90 W of average power; with a Q-switched/modelocked oscillator at a Q-switch rate of 10 kHz the system produced over 80 W (50 W at 3 kHz). The output of this laser system has been used to generate the 532 nm second harmonic in lithium triborate (LBO), and to synchronously pump a degenerate OPO which utilized six potassium titanyl phosphate (KTP) crystals as nonlinear converters.

Paper Details

Date Published: 16 June 1993
PDF: 6 pages
Proc. SPIE 1865, Diode Pumping of Average-Power Solid State Lasers, (16 June 1993); doi: 10.1117/12.146938
Show Author Affiliations
William T. Lotshaw, GE Corporate Research and Development Ctr. (United States)
Josef R. Unternahrer, GE Corporate Research and Development Ctr. (United States)
Mark J. Kukla, GE Corporate Research and Development Ctr. (United States)


Published in SPIE Proceedings Vol. 1865:
Diode Pumping of Average-Power Solid State Lasers
Georg F. Albrecht; Raymond J. Beach; Stephan P. Velsko, Editor(s)

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