Highly efficient counter-propagation-beams narrow-band ultraviolet frequency conversion in a quantum gas.
We show that highly efficient ultraviolet frequency up conversion can be established in a single-component quantum gas in the counter-propagating weak pump beam geometry where no frequency up conversion can occur in a normal gas. We also show that all light-wave mixing and scattering processes in quantum gases originating from elementary excitations characterized by efficient collective atomic recoil motion are stimulated Raman/hyper-Raman in nature.
National Institute of Standards & Technology, Gaithersburg, Maryland 20899, USA.
Chengjie
C
Zhu
L
L
Deng
E W
EW
Hagley