Abstract

Analysis of a confocal ring laser including thermal lensing effects in the active medium is presented. The relations for the stability criterion, beam magnification, and the positional shift in the beam minimum are derived in terms of the parameters of the resonator. It is suggested that by appropriately adjusting the separation between the confocal lens pair, the effects due to thermal lensing can be compensated.

© 1986 Optical Society of America

Performance of a general asymmetric unstable Nd: glass ring laser

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Dynamic correction of thermal focusing in Nd:YAG confocal unstable resonators by use of a variable radius mirror

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Unidirectional Unstable Ring Lasers

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