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High-energy LDA side-pumped electro-optical Q-switched Nd:YAG ceramic laser

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Abstract

By employing a uniformly compact side-pumping system, a high-energy electro-optical Q-switched Nd:YAG ceramic laser has been demonstrated. With 420W quasi-cw laser-diode-array pumping at 808nm and a 100Hz modulating repetition rate, 50mJ output energy at 1064nm was obtained with 10ns pulse width, 5W average output power, and 5MW peak power. Its corresponding slope efficiency was 29.8%. The laser system operated quite stably and no saturation phenomena have been observed, which means higher output energy could be expected. Laser parameters between ceramic and single-crystal Nd:YAG lasers have been compared, and pulse characteristics of Nd:YAG ceramic with different repetition rate have been investigated in detail. The still-evolving Nd:YAG ceramics are potential super excellent media for high-energy laser applications.

© 2007 Optical Society of America

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