Direct diode-pumped Q-switched Tm/Ho:YAG laser with wavelength-switchable between Tm laser and Ho laser

H. Z. Huang; L. X. Wu; W. Weng; Y. Ge; J. H. Li; H. C. Wu; W. X. Lin

doi:10.1117/12.2602914

24 November 2021 Direct diode-pumped Q-switched Tm/Ho:YAG laser with wavelength-switchable between Tm laser and Ho laser

H. Z. Huang, L. X. Wu, W. Weng, Y. Ge, J. H. Li, H. C. Wu, W. X. Lin

Author Affiliations +

Proceedings Volume 12060, AOPC 2021: Advanced Laser Technology and Applications; 1206007 (2021) https://doi.org/10.1117/12.2602914
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

We demonstrate a common diode-pumped Q-switched Tm/Ho composite laser with a developed compact hybrid cavity, where the lasing wavelengths were changeable between Ho laser and Tm laser via modulating the cavity losses by changing transmittances of the crystalline Cr:ZnSe saturable absorbers (SAs) or using the output couplers between broad band coating and narrow band coating. Using a common 808 nm diode laser as the pump source, maximum Q-switched Ho laser power of 707 mW at 2091 nm, with pulse energy of 50.7 μJ and peak power of 99 W at 13.4 KHz was obtained among using the NCs. Among the BCs, maximum Q-switched Tm laser power of 413 mW at 2011 nm, with pulse energy of 35 μJ and peak power of 104 W at 11.7 kHz was obtained. Combing both advantages of Tm laser and Ho laser, a wide scope of applications including detection, commutation, and medical treatments are expected from the proposed laser source due to its accessibility, multifunction and miniaturization.

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H. Z. Huang, L. X. Wu, W. Weng, Y. Ge, J. H. Li, H. C. Wu, and W. X. Lin "Direct diode-pumped Q-switched Tm/Ho:YAG laser with wavelength-switchable between Tm laser and Ho laser", Proc. SPIE 12060, AOPC 2021: Advanced Laser Technology and Applications, 1206007 (24 November 2021); https://doi.org/10.1117/12.2602914

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