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Degree of coherence and dimensions of the generation region of powder lasers

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Abstract

A degree of coherence of powder-laser radiation of 10–20% is estimated by the magnitude of the image contrast for a speckle, although cases are recorded where it attains 40–50%. It is found that as the average speckle intensity increases, the contrast decreases. It is established that the minimum, dimensions of the generation region in powders are 20–30 μm. Cases of existence of several generation centers simultaneously are noted. An attempt to interpret the results obtained is made.

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Authors
  1. A. A. Lichmanov
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  2. Ch. M. Briskina
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  3. V. M. Markushev
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  4. V. N. Lichmanova
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  5. N. P. Soshchin
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Additional information

Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11, Mokhovaya St., Moscow, 103907. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 5, pp. 780–786, September–October, 1998.

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Lichmanov, A.A., Briskina, C.M., Markushev, V.M. et al. Degree of coherence and dimensions of the generation region of powder lasers. J Appl Spectrosc 65, 818–825 (1998). https://doi.org/10.1007/BF02679852

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  • DOI: https://doi.org/10.1007/BF02679852

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