Abstract
High-power solid-state lasers operating in the TEM00 mode either cw or at high repetition rate are of considerable importance in many scientific, industrial, and military applications. Oscillation in the TEM00 mode is usually obtained by insertion of an aperture in the laser cavity. In this way, the cross section of the active material as well as the output power and the efficiency are reduced. However, resonators with a large fundamental mode are very sensitive to mechanical perturbations. A further complication in this case arises from severe instabilities of the spot size due to fluctuations of the thermally induced focal length in the laser rod.
© 1986 Optical Society of America
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