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Optics Letters

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  • Vol. 29, Iss. 11 — Jun. 1, 2004
  • pp: 1179–1181

Effect of absorption on the spreading of a laser beam

S. R. Seshadri  »View Author Affiliations


Optics Letters, Vol. 29, Issue 11, pp. 1179-1181 (2004)
http://dx.doi.org/10.1364/OL.29.001179


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Abstract

The propagation characteristics of the fundamental Gaussian laser beam in absorptive and active media are investigated. There is a general reduction in the spreading of the beam on propagation in both absorptive and active media. In addition, in an active medium there is a shift of the focal plane and a reduction in the waist size of the beam.

© 2004 Optical Society of America

OCIS Codes
(260.1960) Physical optics : Diffraction theory
(260.2110) Physical optics : Electromagnetic optics
(260.2160) Physical optics : Energy transfer
(350.5500) Other areas of optics : Propagation

Citation
S. R. Seshadri, "Effect of absorption on the spreading of a laser beam," Opt. Lett. 29, 1179-1181 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-11-1179


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References

  1. H. Kogelnik, Appl. Opt. 4, 1562 (1965).
  2. D. Marcuse, Light Transmission Optics (Van Nostrand Reinhold, New York, 1978), Chap. 6, p. 230.
  3. J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941), Chaps. 1 and 6.
  4. S. R. Seshadri, J. Opt. Soc. Am. A 15, 2712 (1998).

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