Four wave mixing with self-phase matching due to collective atomic recoil
Abstract
We describe a method for non-degenerate four-wave mixing in a cold sample of 4-level atoms. An integral part of the four-wave mixing process is a collective instability which spontaneously generates a periodic density modulation in the cold atomic sample with a period equal to half of the wavelength of the generated high-frequency optical field. Due to the generation of this density modulation, phase-matching between the pump and scattered fields is not a necessary initial condition for this wave-mixing process to occur, rather the density modulation acts to "self phase-match" the fields during the course of the wave-mixing process. We describe a one-dimensional model of this process, and suggest a proof-of-principle experiment which would involve pumping a sample of cold Cs atoms with three infra-red pump fields to produce blue light.
Keywords
Cite
@article{arxiv.quant-ph/0412190,
title = {Four wave mixing with self-phase matching due to collective atomic recoil},
author = {G. R. M. Robb and B. W. J. McNeil},
journal= {arXiv preprint arXiv:quant-ph/0412190},
year = {2016}
}
Comments
to appear in Physical Review Letters