XUV coherent Raman superradiance
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We find that intense short pulses of XUV radiation can be produced by cooperative spontaneous emission from visible or IR laser pulses driving atoms or ions. The process depends on the generation and utilization of atomic coherence as is the case in lasing without inversion. However, the radiation process is not stimulated emission, but is rather cooperative spontaneous emission in the sense of Dicke. More precisely, the many atom mathematics of superradiance has much in common with coherent anti-Stokes Raman scattering. The generation of Raman coherence is considered from the perspectives of multi-photon excitation and breaking of adiabaticity. In particular, we find that the advent of an ultrashort (e.g. single cycle) pulse rewards rethinking of conventional (nanosecond) nonlinear optics with new insights.
author list (cited authors)
Scully, M. O., Rostovtsev, Y., Svidzinsky, A., & Chang, J.
complete list of authors
Scully, Marlan O||Rostovtsev, Yuri||Svidzinsky, Anatoly||Chang, Jun-Tao