title: Frequency translation via four-wave mixing Bragg scattering in Rb filled photonic bandgap fibers.
abstract: We demonstrate frequency translation at microwatt pump power levels in Rubidium vapor confined to a hollow-core photonic bandgap fiber using four-wave mixing Bragg scattering. The 5S(1/2)→5D(3/2) two-photon transition in 85Rb is employed for the four-wave mixing process. Using continuous-wave pump beams at 780 and 795 nm, a weak signal beam at 776 nm is translated to a wavelength of 762 nm with a 21% conversion efficiency at pump powers of 300 μW.
authors.forename: Prathamesh S
authors.initials: PS
authors.lastname: Donvalkar
authors.forename: Vivek
authors.initials: V
authors.lastname: Venkataraman
authors.forename: Stéphane
authors.initials: S
authors.lastname: Clemmen
authors.forename: Kasturi
authors.initials: K
authors.lastname: Saha
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta