Open AccessEfficient Raman frequency conversion by coherent feedback at low light intensity
Author(s) -
Bing Chen,
Kai Zhang,
Cheng-ling Bian,
Cheng Qiu,
Chun-Hua Yuan,
L. Q. Chen,
Z. Y. Ou,
Weiping Zhang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.010490
Subject(s) - raman spectroscopy , coherent anti stokes raman spectroscopy , optics , coherence (philosophical gambling strategy) , energy conversion efficiency , raman scattering , coherent spectroscopy , stokes parameters , nonlinear optics , physics , atomic coherence , materials science , optoelectronics , laser , quantum mechanics , scattering
We experimentally demonstrate efficient Raman conversion to respective Stokes and anti-Stokes fields in both pulsed and continuous modes with a Rb-87 atomic vapor cell. The conversion efficiency is about 40-50% for the Stokes field and 20-30% for the anti-Stokes field, respectively. This efficient conversion process is realized with coherent feedback of both the Raman pump and the frequency-converted fields (Stokes or anti-Stokes). The experimental setup is simple and can be applied easily to produce light sources with larger frequency shifts using other Raman media with long coherence time. They may have potential applications in nonlinear optics, Raman spectroscopy and precision measurement.