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Opt Express. 2011 Nov 7;19(23):22510-4. doi: 10.1364/OE.19.022510.

Megawatt level UV output from [110] Cr⁴⁺:YAG passively Q-switched microchip laser.

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  • 1Institute for Molecular Science, Laser Research Center, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan.


Recent development of megawatt peak power, giant pulse microchip lasers has opened new opportunities for efficient wavelength conversion, provided the output of the microchip laser is linearly polarized. We obtain > 2 MW peak power, 260 ps, 100 Hz pulses at 266 nm by fourth harmonic conversion of a linearly polarized Nd:YAG microchip laser that is passively Q-switched with [110] cut Cr⁴⁺:YAG. The SHG and FHG conversion efficiencies are 85% and 51%, respectively.

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