Abstract
We investigated the propagation in a crystal of a polariton wave whose amplitude is close to the threshold for stimulated Mandelstam-Brillouin scattering. In this situation, the interaction of the initial wave with the scattered polariton and the phonon noise becomes appreciable. Correlations between scattered polaritons and phonons emitted during this scattering lead to the formation of mixed phonon-polariton (“phonoriton”) modes.1 Near threshold the decay rate of one of these mixed modes vanishes, and the number of quanta in the mode grows. Subsequent backscattering of these quanta in the forward direction leads to the development of intense fluctuations consisting of correlated polariton pairs, whose frequencies and propagation directions are close to those of the initial wave.2 This significantly modifies the polariton spectrum: a pseudogap arises with frequency close to that of the initial wave.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
