Measuring laser beam parameters: phase and spatial coherence using the Wigner function

Bernd Eppich; Sandra Johansson; Holger Laabs; Horst Weber

doi:10.1117/12.385391

12 May 2000 Measuring laser beam parameters: phase and spatial coherence using the Wigner function

Bernd Eppich, Sandra Johansson, Holger Laabs, Horst Weber

Proceedings Volume 3930, Laser Resonators III; (2000) https://doi.org/10.1117/12.385391
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

Detailed laser beam characterization is essential for the proper choice of lasers source according to the respective application as well as for the optimization of optical systems. Since most lasers generate partially coherent beams, intensity and phase distributions are not enough to describe them. In addition the knowledge of the coherence distribution is necessary. So far different setups have been used to measure phase and coherence distribution with limited accuracy. Here we demonstrate a new measurement procedure which is based on the retrieval of the Wigner distribution, from which all relevant information can be derived. The setup is very simple and the results seems to be fairly accurate.

Citation Download Citation

Bernd Eppich, Sandra Johansson, Holger Laabs, and Horst Weber "Measuring laser beam parameters: phase and spatial coherence using the Wigner function", Proc. SPIE 3930, Laser Resonators III, (12 May 2000); https://doi.org/10.1117/12.385391

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