Pulsation of 10 and 20 emission for laser-produced plasmas. II. Theory

Abstract

It is demonstrated that stimulated Brillouin scattering (SBS) saturated by a nonlinear shift of the wave number of the ion-acoustic wave can be responsible for temporal oscillations of the radiation reflected from an expanding laser-produced plasma. Repetitive amplification and quenching of the SBS result in rapid motion of the reflection point, thus causing large sweeps of the phase of the emitted light. Both temporal pulsations and modulation of time-integrated spectra of the back-reflected radiation and its harmonics are in accord with experimental observations. Show more