Output characteristics of acousto-optical cavity dumped Tm:YAG ceramic laser

A single transverse mode high-pulse-energy vertical-external-cavity surface-emitting laser (VECSEL) was developed. The GaSb-based VECSEL emits at a wavelength of 2.04 µm with a peak power exceeding 500 W while maintaining good beam quality. The cavity employs a Pockels cell combined with a low-loss thin film polarizer to selectively dump the intracavity energy into a 10 ns pulse. The laser has promise for incoherent LIDAR, materials processing, gas sensing, and nonlinear optics.

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

Chizhikov¹,

Mukhin²,

Egorov³

et al. 2022

Opt. Lett.

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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 μm and an RF driving power below 8 W. The laser-induced damage threshold of the KYW crystal was found to equal 650 MW/cm2. Operation of a nanosecond periodically pulsed Ho:YAG laser emitting 15 mJ pulses at 2.1 μm with the KYW Q-switch is reported.

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Output characteristics of acousto-optical cavity dumped Tm:YAG ceramic laser

Cited by 3 publications

References 12 publications

LD end-pumped Tm: YAG Q-switched laser with novel multi-pass gain configuration

LD end-pumped Tm: YAG Q-switched laser with novel multi-pass gain configuration

500 W peak power cavity dumped 2 µm GaSb-based VECSEL

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

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