Abstract
The properties of the phase space beam analyser (PSBA), first introduced by Nemes, were investigated theoretically and experimentally. This optical system enables one to measure far-field divergence and beam radius of a laser beam simultaneously. Experiments were performed with a pulsed Nd: YAG laser with stable and unstable resonators and with a HeNe laser in fundamental mode operation. The theoretical description was based on Fresnel integrals, which were solved numerically using a FFT algorithm. The results presented indicate that the PSBA provides a simple means to determine beam quality and to investigate the mode properties of optical resonators, if diffraction effects are properly compensated.
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Hodgson, N., Haase, T., Kostka, R. et al. Determination of laser beam parameters with the phase space beam analyser. Opt Quant Electron 24, S927–S949 (1992). https://doi.org/10.1007/BF01588596
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DOI: https://doi.org/10.1007/BF01588596