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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry Van Driel
  • Vol. 26, Iss. 5 — May. 1, 2009
  • pp: 1076–1083

Laser guiding of cold molecules in a hollow photonic bandgap fiber

Runqin Liu, Qi Zhou, Yaling Yin, and Jianping Yin  »View Author Affiliations


JOSA B, Vol. 26, Issue 5, pp. 1076-1083 (2009)
http://dx.doi.org/10.1364/JOSAB.26.001076


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Abstract

We propose a promising scheme to guide buffer-gas cooled arbitrary neutral molecules in a hollow-core photonic bandgap (HC-PBG) fiber by using a red-detuned Gaussian mode and calculate the optical coupling efficiency of the Gaussian mode in the HC-PBG and its optical potential for I 2 molecules. Also, we calculate both the straight guiding efficiency and bend guiding one by using a classical model and the dynamic process of the laser guiding of cold molecules in the HC-PBG by Monte Carlo simulation, by which we obtain the transverse and longitudinal velocity distributions of the output guided molecular beam. Our study shows that when the input laser power is 2 kW, the straight guiding efficiency is 24.6 % and when the input laser power is 200 W and R = 0.2   cm , the bent guiding efficiency is 1.2 % . We also find from the simulated results that our laser bent guiding scheme is a simple and desirable method to generate a CW cold arbitrary molecular beam.

© 2009 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.7010) Atomic and molecular physics : Laser trapping

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: November 11, 2008
Revised Manuscript: February 12, 2009
Manuscript Accepted: March 10, 2009
Published: April 21, 2009

Citation
Runqin Liu, Qi Zhou, Yaling Yin, and Jianping Yin, "Laser guiding of cold molecules in a hollow photonic bandgap fiber," J. Opt. Soc. Am. B 26, 1076-1083 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-5-1076


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