High-power laser beam characterization

Bernd Eppich; R. Kostka; Norbert Reng; Horst Weber

doi:10.1117/12.184612

16 August 1994 High-power laser beam characterization

Bernd Eppich, R. Kostka, Norbert Reng, Horst Weber

Proceedings Volume 2206, High-Power Gas and Solid State Lasers; (1994) https://doi.org/10.1117/12.184612
Event: Europto High Power Lasers and Laser Applications V, 1994, Vienna, Austria

Abstract

The propagation characteristics of several beam radius definitions have been investigated analytically, numerically, and experimentally with regards to their applicability for high power solid state lasers with stable and unstable resonators and to the measurement with CCD cameras. Only for the second-moment radius a propagation law can be derived, which is valid for arbitrary partially coherent, paraxial beams. The same propagation law can be applied to the more useful power-content radius definition solely in the case of beams with non-varying profile such as produced by stable multi-mode resonators. For beams with varying profiles (such as produced by lasers with unstable resonators) a method is presented that allows the estimation of power-content radii behind cylindrical ABCD systems.

Citation Download Citation

Bernd Eppich, R. Kostka, Norbert Reng, and Horst Weber "High-power laser beam characterization", Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); https://doi.org/10.1117/12.184612

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