Enhanced frequency up-conversion in Rb vapor

Vernier, A. and Franke-Arnold, S. and Riis, E. and Arnold, A. S. (2010) Enhanced frequency up-conversion in Rb vapor. Optics Express, 18 (16). pp. 17020-17026. ISSN 1094-4087 (https://doi.org/10.1364/OE.18.017020)

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Abstract

We demonstrate highly efficient generation of coherent 420 nm light via up-conversion of near-infrared lasers in a hot rubidium vapor cell. By optimizing pump polarizations and frequencies we achieve a single-pass conversion efficiency of 260% per Watt, significantly higher than in previous experiments. A full exploration of the coherent light generation and fluorescence as a function of both pump frequencies reveals that coherent blue light is generated close to Rb-85 two-photon resonances, as predicted by theory, but at high vapor pressure is suppressed in spectral regions that do not support phase matching or exhibit single-photon Kerr refraction. Favorable scaling of our current 1 mW blue beam power with additional pump power is predicted.

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• Item metadata

  Item type:	Article
  ID code:	28924
  Dates:	Date Event 2 August 2010 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	21 Mar 2011 15:28
  Last modified:	14 Apr 2024 00:23
  URI:	https://strathprints.strath.ac.uk/id/eprint/28924