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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 19, Iss. 9 — May. 1, 1994
  • pp: 667–669

Picosecond degenerate four-wave mixing on potassium in a methane–air flame

M. A. Linne and G. J. Fiechtner  »View Author Affiliations


Optics Letters, Vol. 19, Issue 9, pp. 667-669 (1994)
http://dx.doi.org/10.1364/OL.19.000667


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Abstract

We demonstrate that picosecond mode-locked laser-based degenerate four-wave mixing can be detected with good signal-to-noise ratios in an optically thin flame and that detailed turbulence statistics can be acquired by use of this technique. A regeneratively mode-locked Ti:sapphire laser was tuned to the 4 2 S 1 / 2 - 4 2 P 1 / 2 transition in atomic potassium (which was doped into the flame) at 769.9 nm. Using the all-forward degenerate four-wave mixing geometry, we achieved signal-to-noise ratios of 70:1 without the use of a spatial filter. A sensitivity curve and a method for acquiring turbulence statistics are presented.

© 1994 Optical Society of America

History
Original Manuscript: November 15, 1993
Published: May 1, 1994

Citation
M. A. Linne and G. J. Fiechtner, "Picosecond degenerate four-wave mixing on potassium in a methane–air flame," Opt. Lett. 19, 667-669 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-9-667

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