High-power gain-enhanced internally frequency-converted Q-switched Nd:YAG lasers

Loren A. Eyres; James J. Morehead; Jeffrey Gregg; Shannon Gomes

doi:10.1117/12.776978

14 February 2008 High-power gain-enhanced internally frequency-converted Q-switched Nd:YAG lasers

Loren A. Eyres, James J. Morehead, Jeffrey Gregg, Shannon Gomes

Proceedings Volume 6871, Solid State Lasers XVII: Technology and Devices; 68711N (2008) https://doi.org/10.1117/12.776978
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

Optimization of nonlinear coupling and use of aggressive Q-switch clipping on the pulse falling edge has enabled high beam quality, internally frequency-converted, Nd:YAG lasers with output powers greater than 35 W at both green and ultraviolet wavelengths. By retaining more energy in the rod after the pulse, such lasers operate with enhanced gain levels and achieve greater nonlinear conversion. Operation in this gain-enhancement regime has enabled lasers with highly variable pulse-widths. We demonstrate here that gain-enhanced laser operation with variable pulse energy and/or delay between pulses is also possible. This combination of features and flexibility available in gain-enhanced, frequency-converted lasers allows optimization of laser processing for a wide range of candidate materials.

Citation Download Citation

Loren A. Eyres, James J. Morehead, Jeffrey Gregg, and Shannon Gomes "High-power gain-enhanced internally frequency-converted Q-switched Nd:YAG lasers", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68711N (14 February 2008); https://doi.org/10.1117/12.776978

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