Using a pump–probe scheme with a large cloud of cold rubidium atoms, we observe very large double-pass gain (1800%) due to interference between Raman gain and four-wave mixing. A simple model explains the main features observed.
© 2007 Optical Society of America
Original Manuscript: December 20, 2006
Manuscript Accepted: February 27, 2007
Published: July 26, 2007
Photonic Metamaterials (2007) JOSA A
Franck Michaud, Giovanni-Luca Gattobigio, Jose W. R. Tabosa, and Robin Kaiser, "Interference between Raman gain and four-wave mixing in cold atoms," J. Opt. Soc. Am. B 24, A40-A47 (2007)