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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 73, Iss. 8 — Aug. 1, 1983
  • pp: 1018–1021

Temporal and interference fringe analysis of TEM01* laser modes

J. M. Vaughan and D. V. Willetts  »View Author Affiliations

JOSA, Vol. 73, Issue 8, pp. 1018-1021 (1983)

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The properties of TEM01* doughnut modes have been examined by frequency analysis and by two-beam interference. Interpretation in terms of an evolving helix, made up to two orthogonal TEM01 modes of different frequency, is supported by computer simulation of fringe patterns. These patterns are shown to correspond closely with photographic recordings; the implications of the phenomena for the crossed-beam technique in laser velocimetry are outlined. Finally, the possibility of developing a beam of pure helical cophasal surface is discussed and its interference patterns analyzed.

J. M. Vaughan and D. V. Willetts, "Temporal and interference fringe analysis of TEM01* laser modes," J. Opt. Soc. Am. 73, 1018-1021 (1983)

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  1. J. M. Vaughan and D. V. Willetts, "Interference properties of a light beam having a helical wave surface," Opt. Commun. 30, 263–267 (1979).
  2. D. V. Willetts and J. M. Vaughan, "Properties of a laser mode with a helical cophasal surface," in Laser Advances and Applications, B. S. Wherrett, ed. (Wiley, New York, 1980), pp. 51–56.
  3. P. N. Pusey, J. M. Vaughan, and D. V. Willetts, "Effect of spatial incoherence of the laser in photon-correlation spectroscopy," J. Opt. Soc. Am. 73, 1012–1017 (1983).
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  5. M. Bertolotti, B. Daino, F. Gori, and D. Sette, "Coherence properties of a laser beam," Nuovo Cimento 38, 1505–1514 (1965).
  6. M. Carnevale and B. Daino, "Spatial coherence analysis by interferometric methods," Opt. Acta 24, 1099–1104 (1977).
  7. P. M. Morse and H. Feshbach, Methods of Theoretical Physics (McGraw-Hill, New York, 1953), Part I, Sec. 4.4.

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