Designing DOEs for real-time analysis of beam mode content

S. V. Karpeev; Vladimir S. Pavelyev; Victor A. Soifer

doi:10.1117/12.407672

27 November 2000 Designing DOEs for real-time analysis of beam mode content

S. V. Karpeev, Vladimir S. Pavelyev, Victor A. Soifer

Proceedings Volume 4316, International Conference on Lasers for Measurements and Information Transfer; (2000) https://doi.org/10.1117/12.407672
Event: International Conference on Lasers for Measurements and Information Transfer, 2000, St. Petersburg, Russian Federation

Abstract

Analyzing of amplitude-phase characteristics of the laser beam in real-time mode is topical in experimental physics and in a great number of laser applications, such as laser material treatment. The task of analyzing the amplitude-phase beam structure may be treated as that of analyzing the modal composition if this is thought of as both analyzing individual modal powers and intermodal phase shifts. In this paper, the problem is tackled using a special diffractive element (DOE), called MODAN, matched to a group of laser radiation modes. By way of illustration, such an optical element may be implemented as a microrelief applied directly onto an optical material of the laser output window. The experimental results reported indicate that such an approach shows promise.

Citation Download Citation

S. V. Karpeev, Vladimir S. Pavelyev, and Victor A. Soifer "Designing DOEs for real-time analysis of beam mode content", Proc. SPIE 4316, International Conference on Lasers for Measurements and Information Transfer, (27 November 2000); https://doi.org/10.1117/12.407672

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