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21 February 2020 Thermal lensing in diode-pumped Yb:CALGO and Yb:KGW lasers
R. Akbari, P. Loiko, A. Major
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Proceedings Volume 11259, Solid State Lasers XXIX: Technology and Devices; 112591W (2020) https://doi.org/10.1117/12.2542111
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
The thermal lensing effect in the Ng-cut Yb:KGW and a-cut Yb:CALGO laser crystals was evaluated and compared using a similar laser cavity and pumping scheme. The Yb:KGW crystal exhibited large anisotropy along the horizontal and vertical axes and the thermal lensing sensitivity factors of Mx=0.52 m-1/W (||Np) and My=0.18 m-1/W (||Nm) were determined. The Yb:CALGO crystal exhibited negligible anisotropy in the thermal lensing power, and thermal lensing sensitivity factors of Mx=0.452 m-1/W (⊥c) and My=0.458 m-1/W (||c) were measured.
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R. Akbari, P. Loiko, and A. Major "Thermal lensing in diode-pumped Yb:CALGO and Yb:KGW lasers", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112591W (21 February 2020); https://doi.org/10.1117/12.2542111
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KEYWORDS
Crystals
Thermal effects
Laser crystals
Anisotropy
Absorption
Continuous wave operation
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