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Proceedings Paper

Method For Compensation Of Thermal Lensing In Slab Lasers
Author(s): Imre Czigany; Boris I. Denker; Boris I. Galagan; Ivan Kertesz; Norbert Kroo; Gabor Lupkovics; Viacheslav V. Osiko; Sergei E. Sverchkov
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Paper 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.

Paper Details

Date Published: 21 December 1989
PDF: 5 pages
Proc. SPIE 1128, Glasses for Optoelectronics, (21 December 1989); doi: 10.1117/12.961480
Show Author Affiliations
Imre Czigany, Hungarian Academy of Sciences (Hungary)
Boris I. Denker, Institute for General Physics of the Soviet Academy (USSR)
Boris I. Galagan, Institute for General Physics of the Soviet Academy (USSR)
Ivan Kertesz, Hungarian Academy of Sciences (Hungary)
Norbert Kroo, Hungarian Academy of Sciences (Hungary)
Gabor Lupkovics, Hungarian Optical Work (Hungary)
Viacheslav V. Osiko, Institute for General Physics of the Soviet Academy (USSR)
Sergei E. Sverchkov, Institute for General Physics of the Soviet Academy (USSR)

Published in SPIE Proceedings Vol. 1128:
Glasses for Optoelectronics

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