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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 5, Iss. 2 — Feb. 1, 1980
  • pp: 56–58

Angular dependence of line shape and strength of degenerate four-wave mixing in a Doppler-broadened system with optical pumping

L. M. Humphrey, J. P. Gordon, and P. F. Liao  »View Author Affiliations


Optics Letters, Vol. 5, Issue 2, pp. 56-58 (1980)
http://dx.doi.org/10.1364/OL.5.000056


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Abstract

Results of experiments investigating the effects of optical pumping and atomic motion on cw degenerate four-wave mixing in atomic sodium vapor are presented. The signal strength is found to decrease as (sin θ)−2, where θ is the angle between the object and pump waves; however, the linewidth for generation is Doppler free and is independent of θ. Agreement is found with a simple model of the mixing process. Distortions of the atomic velocity distribution (produced in our experiments by optical pumping) are found to be essential for efficient cw generation. A new modulation scheme for the discrimination against background is used.

© 1980 Optical Society of America

History
Original Manuscript: October 1, 1979
Published: February 1, 1980

Citation
L. M. Humphrey, J. P. Gordon, and P. F. Liao, "Angular dependence of line shape and strength of degenerate four-wave mixing in a Doppler-broadened system with optical pumping," Opt. Lett. 5, 56-58 (1980)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-5-2-56

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