Collisionally triggered generation of a coherent signal

Publisher Website
Google Scholar
Abstract
We demonstrate the generation of a coherent signal by an incoherent process. In a first step, population is transferred from the ground state to two excited states by a collisional redistribution process. Then, in a second step, a coherent Raman signal is generated from these two populated excited states. At high pressure, it is predicted that a Raman-type resonance between two equally populated levels should be observed. Information about inelastic-collision cross sections and dephasing coefficients in the excited states is obtained.