Superradiance in Raman scattering of light

豊 吉川

A.V. Andreev, Sergei Sheetlin

Vladimir I Emel'yanov, Vladimir N. Seminogov

An analysis is made of superradiance under Raman light scattering conditions (SRRS) allowing for pump depletion in the single-mode approximation. An investigation is made of the population difference kinetics and the pulse temporal profile under SRRS conditions. It is shown that allowance for the pump depletion imposes an additional constraint on the observation of SRRS, i.e., an upper limit of ~10 19 cm –3 for the density of the medium. It it is noted that as a result, observation of SRRS is more likely in gaseous media.

Yutaka Yoshikawa, Toshiaki Sugiura, Yoshio Torii +1 more

We observed superradiant Raman scattering from a Bose-Einstein condensate irradiated by a single off-resonant light beam. Spontaneous mode selection of the scattered radiation turns probabilistic optical pumping into a stimulated Raman process, whereby the atoms are coherently transferred into a different hyperfine state. The population in the pumped state grew exponentially in time, demonstrating the emergence of bosonic stimulation in the optical pumping process.

Tun Wang, Susanne F. Yelin

G.Ya. Lyubarskii