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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 54, Iss. 4 — Apr. 1, 1964
  • pp: 454–455

Magneto-Optic Modulation of a Light Beam in Sodium Vapor

BERNHARD M. SCHMIDT, JOHN M. WILLIAMS, and DUDLEY WILLIAMS  »View Author Affiliations


JOSA, Vol. 54, Issue 4, pp. 454-455 (1964)
http://dx.doi.org/10.1364/JOSA.54.000454


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Abstract

The enhanced Faraday effect in gases for optical frequencies near absorption lines provides a basis for modulating a light beam. In the present study, incident radiation consisting of the Zeeman s components of the D lines of sodium passed through a polarizer to the Faraday cell, which employed saturated sodium vapor at approximately 240°C as an optical medium. Rotation of the plane of polarization of radiation traversing the cell was modulated at frequencies as high as 698 Mc/sec. On the basis of cw modulation studies, there appears to be no reduction in the integrated time-varying Faraday effect for frequencies as high as 265 Mc/sec; this frequency is 1100 times the Larmor frequency in the magnetic fields involved and 26 times the natural linewidth. There was no evidence of any reduction in frequency response for pulsed modulation at 698 Mc/sec.

Citation
BERNHARD M. SCHMIDT, JOHN M. WILLIAMS, and DUDLEY WILLIAMS, "Magneto-Optic Modulation of a Light Beam in Sodium Vapor," J. Opt. Soc. Am. 54, 454-455 (1964)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-54-4-454


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References

  1. D. Macaluso and O. M. Corbino, Compt. Rend. 127, 518 (1898).
  2. R. W. Wood, Physical Optics (The Macmillan Company, New York, 1934), p. 283.
  3. N. Bohr, Naturwiss. 12, 1115 (1925).
  4. W. Hanle, Z. Phys. 85, 304 (1933).
  5. E. Bretscher and W. Deck, Helv. Phys. Acta 6, 229 (1933).
  6. H. A. Lorentz, The Theory of Electrons (B. G. Teubner, Leipzig, 1916).
  7. W. Kuhn, Danske Videnskabernes Selskab (Zürich Habilitationsschrift, 1926); excellent summary given by A. C. G. Mitchell and M. W. Zemansky, Resonance Radiation and Excited Atoms (Cambridge University Press, London, 1934), Appendix VII.
  8. A. C. G. Mitchell and M. W. Zemansky, Resonance Radiation and Excited Atoms (Cambridge University Press, London, 1934), P. 99.
  9. S. Dushman and J. M. Lafferty, Scientific Foundations of Vacuum Technology (John Wiley & Sons, Inc., New York, 1962), p. 696.

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