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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 3, Iss. 4 — Apr. 1, 1986
  • pp: 554–559

Studies of picosecond collisional dephasing in atomic sodium vapor using broad-bandwidth transient four-wave mixing

J. E. Golub and T. W. Mossberg  »View Author Affiliations


JOSA B, Vol. 3, Issue 4, pp. 554-559 (1986)
http://dx.doi.org/10.1364/JOSAB.3.000554


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Abstract

We have employed dye-laser pulses of 10-nsec duration and 1.5-10-nm bandwidth in a transient four-wave-mixing experiment to study high-perturber-pressure collisional dephasing in dilute atomic sodium vapor. Working at argon perturber pressures of several atmospheres, we are able clearly to resolve dephasing times over a thousand times shorter than our excitation pulse duration. Measured dephasing rates are in excellent agreement with those measured by more traditional methods. When both of the sodium D lines are excited, our signal displays quantumbeat-like oscillations at the 0.52-THz frequency difference between these two states. We provide a simple picture explaining the origin of these beats.

© 1986 Optical Society of America

Citation
J. E. Golub and T. W. Mossberg, "Studies of picosecond collisional dephasing in atomic sodium vapor using broad-bandwidth transient four-wave mixing," J. Opt. Soc. Am. B 3, 554-559 (1986)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-3-4-554


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