Fast Rabi-Induced Sideband Emission in Rubidium Vapor

4 03/2015

Wednesday, 04 Mar. 2015, 09:30 - 10:30

Presenter: Andrew Traverso (Texas A&M University, USA)
Host: VCQ
Where: Christian-Doppler Lecture Hall, Boltzmanngasse 5, 3rd Floor, 1090 Vienna

Abstract: I will discuss our recent experimental results in dense Rubidium vapour (  10 16 cm -3 ) where we observed directional coherent emission induced by optically pumping with an intense picosecond pulse. The emission lines are far-detuned from the applied field, following the effective Rabi frequency at . Sideband emission was observed from both the D1 and D2 transitions with measured detunings of 30 nm at the limits of our scan range. These sidebands appear to be both coherent and directional, being induced via the generation of coherence in the Rb atom where population is placed into the eigenstates in a dressed state picture. The emission exhibits a short duration (<1 ns) with threshold-like behavior dependent both on pump intensity and Rb vapor density. This Fast Rabi-Induced Sideband Emission (FRISBE) could have a wide variety of applications in fields such as coherent/nonlinear spectroscopy, frequency comb generation, and remote sensing.