High-efficiency KYW acousto-optic Q-switch for a Ho:YAG laser

Alexander I Chizhikov, Aleksey V Mukhin, Nikolay A Egorov,Vasily V Gurov,Vladimir Y Molchanov,Natalya F Naumenko, Konstantin V Vorontsov,Konstantin B Yushkov,Nikita G Zakharov

OPTICS LETTERS（2022）

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摘要

A new, to the best of our knowledge, type of acousto-optic Q-switch was developed using slow shear acoustic mode in potassium yttrium tungstate (KYW) crystal. Two Q-switch configurations were created: one for vertical and one for horizontal light polarization, both providing over 50% diffraction efficiency at a wavelength of 2.1 mu m and an RF driving power below 8 W. The laser-induced damage threshold of the KYW crystal was found to equal 650 MW/cm(2). Operation of a nanosecond periodically pulsed Ho:YAG laser emitting 15 mJ pulses at 2.1 mu m with the KYW Q- switch is reported. (C) 2022 Optica Publishing Group

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关键词

laser,hoyag,high-efficiency,acousto-optic,q-switch

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