High-average-power TEM00-mode Nd:YAG laser system for nonlinear frequency conversion

William T. Lotshaw; Josef R. Unternahrer; Mark J. Kukla

doi:10.1117/12.146938

16 June 1993 High-average-power TEM₀₀-mode Nd:YAG laser system for nonlinear frequency conversion

William T. Lotshaw, Josef R. Unternahrer, Mark J. Kukla

Proceedings Volume 1865, Diode Pumping of Average-Power Solid State Lasers; (1993) https://doi.org/10.1117/12.146938
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

William T. Lotshaw, Josef R. Unternahrer, and Mark J. Kukla "High-average-power TEM₀₀-mode Nd:YAG laser system for nonlinear frequency conversion", Proc. SPIE 1865, Diode Pumping of Average-Power Solid State Lasers, (16 June 1993); https://doi.org/10.1117/12.146938

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