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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 63, Iss. 12 — Dec. 1, 1973
  • pp: 1550–1552

Spatial coherence of laser output far below threshold

H. J. Kimble and L. Mandel  »View Author Affiliations

JOSA, Vol. 63, Issue 12, pp. 1550-1552 (1973)

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The light emerging from the output aperture of a laser should be spatially coherent even when the laser is operated far below its threshold and behaves substantially as a thermal source. The spatial coherence has been demonstrated experimentally by photoelectric correlation measurements at different pairs of points in the aperture.

H. J. Kimble and L. Mandel, "Spatial coherence of laser output far below threshold," J. Opt. Soc. Am. 63, 1550-1552 (1973)

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  1. H. Risken and H. D. Vollmer, Z. Phys. 201, 323 (1967); R. D. Hempstead and M. Lax, Phys. Rev. 161, 350 (1967); M. O. Scully and W. E. Lamb, Jr., Phys. Rev. 159, 208 (1967); Phys. Rev. 179, 368 (1969).
  2. C. Freed and H. A. Haus, IEEE J. Quantum Electron. 2, 190 (1966); A. W. Smith and J. A. Armstrong, Phys. Rev. Lett. 16, 1169 (1966); F. T. Arecchi, G. S. Rodari, and A. Sona, Phys. Lett. 25A, 59 (1967); F. Davidson and L. Mandel, Phys. Lett. A 25A, 700 (1967); R. F. Chang, V. Korenman, C. O. Alley, Jr., and R. W. Detenbeck, Phys. Rev. 178, 612 (1969).
  3. See, for example, M. Born and E. Wolf, Principles of Optics, 4th ed. (Pergamon, Oxford, 1970), Sec. 8.3.
  4. Reference 3, Sec. 10.4.
  5. F. Davidson, Phys. Rev. 185, 446 (1969); D. Meltzer and L.Mandel, IEEE J. Quantum Electron. 6, 661 (1970).
  6. S. Chopra and L. Mandel, Rev. Sci. Instrum. 43, 1489 (1972).
  7. See, for example, L. Mandel and E. Wolf, Rev. Mod. Phys. 37, 231 (1965).

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