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Mode selection by homogeneous broadening and non-linear absorption

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Abstract

A continuously tunable single mode can be selected from a multimode spectrum of a laser by non-linear absorbers. Theoretical and experimental investigations show that the selectivity of the method and the power of the selected mode depend considerably on the ratio of the saturation parameters of the amplifying and absorbing medium.

With a He∶Ne laser having an active length of 1.70 m, a power of 35 mW was obtained in single-mode operation.

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Authors and Affiliations

  1. Sektion Physik, Friedrich-Schiller-Universität Jena, DDR

    W. Dietel & D. Kühlke

  2. VEB Carl Zeiss Jena, DDR

    H. Sander

Authors
  1. W. Dietel
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  2. D. Kühlke
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  3. H. Sander
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Dietel, W., Kühlke, D. & Sander, H. Mode selection by homogeneous broadening and non-linear absorption. Opt Quant Electron 7, 345–353 (1975). https://doi.org/10.1007/BF00619832

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  • DOI: https://doi.org/10.1007/BF00619832

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