> 6 MW peak power at 532 nm from passively Q-switched Nd:YAG/Cr4+:YAG microchip laser.
ABSTRACT Megawatt peak power, giant pulse microchip lasers are attractive for wavelength conversion, provided their output is linearly polarized. We use a  cut Cr(4+):YAG for passively Q-switched Nd:YAG microchip laser to obtain a stable, linearly polarized output. Further, we optimize the conditions for second harmonic generation at 532 nm wavelength to achieve > 6 MW peak power, 1.7 mJ, 265 ps, 100 Hz pulses with a conversion efficiency of 85%.
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ABSTRACT: In this paper, a high average power passively Q-switched, laser diode side-pumped green laser at 532 nm was reported by using Nd:YAG/Cr4+:YAG/YAG composite crystal for the first time. The performances of the average power, pulse width, and pulse repetition rate on pump power were measured. Under the pump power of 187.5 W, the Q-switched green laser was obtained with the average power of 27.2 W, pulse width of 210 ns, and the repetition rate of 21.2 kHz. The single-pulse energy was 1.28 mJ and peak power was higher than 6.1 kW.08/2014; 26(3):032009. DOI:10.2351/1.4870435
IEEE Journal of Selected Topics in Quantum Electronics 01/2015; 21(1):178-184. DOI:10.1109/JSTQE.2014.2350834 · 3.47 Impact Factor
IEEE Journal of Selected Topics in Quantum Electronics 01/2015; 21(1):79-84. DOI:10.1109/JSTQE.2014.2345758 · 3.47 Impact Factor