High-power dual-rod Yb:YAG laser (original) (raw)

Optica Article

Eric C. Honea, Raymond J. Beach, Scott C. Mitchell, Jay A. Skidmore, Mark A. Emanuel, Steven B. Sutton, Stephen A. Payne, Petras V. Avizonis, Robert S. Monroe, and Dennis G. Harris

Author Affiliations

Eric C. Honea,1Raymond J. Beach,1Scott C. Mitchell,1Jay A. Skidmore,1Mark A. Emanuel,1Steven B. Sutton,1Stephen A. Payne,1Petras V. Avizonis,2Robert S. Monroe,2and Dennis G. Harris2

1Lawrence Livermore National Laboratory, L-482, P.O. Box 808, Livermore, California 94551

2Boeing Laser & Electro-Optical System, Canoga Park, California, 91309

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Abstract

We describe a diode-pumped Yb:YAG laser that produces 1080 W of power cw with 27.5% optical optical efficiency and 532 W Q-switched with M2=2.2 and 17% optical–optical efficiency. The laser uses two composite Yb:YAG rods separated by a 90° quartz rotator for bifocusing compensation. A microlensed diode array end pumps each rod, using a hollow lens duct for pump delivery. By changing resonator parameters we can adjust the fundamental mode size and the output beam quality. Using a flattened Gaussian intensity profile to calculate the mode-fill efficiency and clipping losses, we compare experimental data with modeled output power versus beam quality.

© 2000 Optical Society of America

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