Abstract

We report some experimental results concerning the statistical properties of a light beam scattered by a rotating ground glass with average-size inhomogeneities of approximately 1 µm. Photocount statistics measured at different scattering angles and for different angular velocities of the ground glass have confirmed the known result that the scattered-light amplitude is a stochastic gaussian variable. The Bose-Einstein nature of the photocount statistics has been verified with an accuracy of a few parts per thousand. Self-beating measurements on the scattered light of a He-Ne laser in a <i>TEM</i><sub>00</sub> configuration have shown that the power spectrum is a gaussian function of the frequency. The dependence of its half-width on the angular velocity of the ground glass and on the focal length of the lens that focuses the beam on the scattering surface has been measured. The experimental results agree very closely with our theoretical predictions.

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  1. See, for example, A. Sommerfeld, Optics (Academic, New York, 1954), p. 196.
  2. W. Martienssen and E. Spiller, Am. J. Phys. 32, 919 (1964); F. T. Arecchi, Phys. Rev. Letters 15, 912 (1965).
  3. F. T. Arecchi, M. Giglio, and U. Tartari, Phys. Rev. 163, 186 (1967); N. A. Clark, J. H. Lunacek, and G. B. Benedek, Am. J. Phys. 38, 575 (1970).
  4. F. T. Arecchi, in Quantuin Optics, edited by R. J. Glauber (Academic, New York, 1970).
  5. Two authoritative reviews on the problem of light scattering from thermodynamical fluctuations are I. L. Fabelinskii, Molecular Scattering of Light (Plenum, New York, 1968), and G. B. Benedek, in 9th Brandeis Sumnmer Institute in Theoretical Physics (Gordon and Breach, New York, 1968).
  6. N. C. Ford and G. B. Benedek, Phys. Rev. Letters 15, 649 (1965).
  7. V. V. Anisimov, S. M. Kozel, and G. R. Lokshin, Opt. Spektrosk. 27, 258 (1969).
  8. The term 1/4σ2 of Eq. (16) is negligible compared to k2σ22 for the range of focal lengths used in our experiments.
  9. See, for example, G. B. Benedek, Ref. 5.

Anisimov, V. V.

V. V. Anisimov, S. M. Kozel, and G. R. Lokshin, Opt. Spektrosk. 27, 258 (1969).

Arecchi, F. T.

F. T. Arecchi, M. Giglio, and U. Tartari, Phys. Rev. 163, 186 (1967); N. A. Clark, J. H. Lunacek, and G. B. Benedek, Am. J. Phys. 38, 575 (1970).

F. T. Arecchi, in Quantuin Optics, edited by R. J. Glauber (Academic, New York, 1970).

Benedek, G. B.

N. C. Ford and G. B. Benedek, Phys. Rev. Letters 15, 649 (1965).

See, for example, G. B. Benedek, Ref. 5.

Fabelinskii, I. L.

Two authoritative reviews on the problem of light scattering from thermodynamical fluctuations are I. L. Fabelinskii, Molecular Scattering of Light (Plenum, New York, 1968), and G. B. Benedek, in 9th Brandeis Sumnmer Institute in Theoretical Physics (Gordon and Breach, New York, 1968).

Ford, N. C.

N. C. Ford and G. B. Benedek, Phys. Rev. Letters 15, 649 (1965).

Giglio, M.

F. T. Arecchi, M. Giglio, and U. Tartari, Phys. Rev. 163, 186 (1967); N. A. Clark, J. H. Lunacek, and G. B. Benedek, Am. J. Phys. 38, 575 (1970).

Kozel, S. M.

V. V. Anisimov, S. M. Kozel, and G. R. Lokshin, Opt. Spektrosk. 27, 258 (1969).

Lokshin, G. R.

V. V. Anisimov, S. M. Kozel, and G. R. Lokshin, Opt. Spektrosk. 27, 258 (1969).

Martienssen, W.

W. Martienssen and E. Spiller, Am. J. Phys. 32, 919 (1964); F. T. Arecchi, Phys. Rev. Letters 15, 912 (1965).

Sommerfeld, A.

See, for example, A. Sommerfeld, Optics (Academic, New York, 1954), p. 196.

Spiller, E.

W. Martienssen and E. Spiller, Am. J. Phys. 32, 919 (1964); F. T. Arecchi, Phys. Rev. Letters 15, 912 (1965).

Tartari, U.

F. T. Arecchi, M. Giglio, and U. Tartari, Phys. Rev. 163, 186 (1967); N. A. Clark, J. H. Lunacek, and G. B. Benedek, Am. J. Phys. 38, 575 (1970).

Other

See, for example, A. Sommerfeld, Optics (Academic, New York, 1954), p. 196.

W. Martienssen and E. Spiller, Am. J. Phys. 32, 919 (1964); F. T. Arecchi, Phys. Rev. Letters 15, 912 (1965).

F. T. Arecchi, M. Giglio, and U. Tartari, Phys. Rev. 163, 186 (1967); N. A. Clark, J. H. Lunacek, and G. B. Benedek, Am. J. Phys. 38, 575 (1970).

F. T. Arecchi, in Quantuin Optics, edited by R. J. Glauber (Academic, New York, 1970).

Two authoritative reviews on the problem of light scattering from thermodynamical fluctuations are I. L. Fabelinskii, Molecular Scattering of Light (Plenum, New York, 1968), and G. B. Benedek, in 9th Brandeis Sumnmer Institute in Theoretical Physics (Gordon and Breach, New York, 1968).

N. C. Ford and G. B. Benedek, Phys. Rev. Letters 15, 649 (1965).

V. V. Anisimov, S. M. Kozel, and G. R. Lokshin, Opt. Spektrosk. 27, 258 (1969).

The term 1/4σ2 of Eq. (16) is negligible compared to k2σ22 for the range of focal lengths used in our experiments.

See, for example, G. B. Benedek, Ref. 5.

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