Method For Compensation Of Thermal Lensing In Slab Lasers

Imre Czigany; Boris I. Denker; Boris I. Galagan; Ivan Kertesz; Norbert Kroo; Gabor Lupkovics; Viacheslav V. Osiko; Sergei E. Sverchkov

doi:10.1117/12.961480

21 December 1989 Method For Compensation Of Thermal Lensing In Slab Lasers

Imre Czigany, Boris I. Denker, Boris I. Galagan, Ivan Kertesz, Norbert Kroo, Gabor Lupkovics, Viacheslav V. Osiko, Sergei E. Sverchkov

Author Affiliations +

Proceedings Volume 1128, Glasses for Optoelectronics; (1989) https://doi.org/10.1117/12.961480
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

The very efficient phosphate glasses of high Nd3+ concentration have relatively (compared to YAG) low thermooptical parameters. In the athermal glasses the thermomechanical stress leads to fraction at moderate average pumping already. Slab geometry with higher than 2.1 width to thickness ratio ensures higher fraction threshold than that of a cylindrical rod of the same cross section, but the thermal lensing causes high-pumping rate dependent-divergence. To compensate the lensing in a relatively wide pumping/repetition rate range a cylindrical resonator was used. With cylindrical mirrors the output beam stability was excellent.

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Imre Czigany, Boris I. Denker, Boris I. Galagan, Ivan Kertesz, Norbert Kroo, Gabor Lupkovics, Viacheslav V. Osiko, and Sergei E. Sverchkov "Method For Compensation Of Thermal Lensing In Slab Lasers", Proc. SPIE 1128, Glasses for Optoelectronics, (21 December 1989); https://doi.org/10.1117/12.961480

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