Phase conjugation for improvement of solid state and excimer lasers

A. Dehn; Hans Joachim Eichler; Andreas Haase; Oliver Mehl; J. Schwartz

doi:10.1117/12.311921

29 June 1998 Phase conjugation for improvement of solid state and excimer lasers

A. Dehn, Hans Joachim Eichler, Andreas Haase, Oliver Mehl, J. Schwartz

Proceedings Volume 3403, International Conference on Atomic and Molecular Pulsed Lasers II; (1998) https://doi.org/10.1117/12.311921
Event: International Conference on Atomic and Molecular Pulsed Lasers, 1997, Tomsk, Russian Federation

Abstract

To improve the beam quality of industrial solid state and excimer lasers, self-pumped phase conjugating mirrors based on stimulated Brillouin scattering (SBS) were applied in different oscillator and master oscillator power amplifier systems. Pulsed Nd-lasers for industrial applications with up to 500 W average output power at 1 micron wavelength and high beam quality were realized. Due to phase conjugation the beam diameter and divergence do not depend on the average output power. In the ultraviolet range, a commercial XeCl laser from Lambda Physik was equipped with an SBS- mirror resulting in a self starting oscillator with phase conjugation at a wavelength of 308 nm. The beam profile could be converted from rectangular to near gaussian and the brightness could be improved. As an alternative to widely used SBS-materials like liquids and gases we developed a new kinds of self-pumped SBS-mirror based on multimode quartz fibers. These exhibit lower SBS thresholds and therefore continuously pumped Q-switched laser systems with SBS-mirror can be realized.

Citation Download Citation

A. Dehn, Hans Joachim Eichler, Andreas Haase, Oliver Mehl, and J. Schwartz "Phase conjugation for improvement of solid state and excimer lasers", Proc. SPIE 3403, International Conference on Atomic and Molecular Pulsed Lasers II, (29 June 1998); https://doi.org/10.1117/12.311921

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