Reversal of the wavefront of nanosecond and subnanosecond light pulses in stimulated Brillouin scattering

An experimental investigation was made of the wavefront reversal parameters and of the reflection coefficient of a stimulated Brillouin scattering mirror made of CCl₄; the measurements were carried out in a wide range of pump energies using pulses of 0.5–10 nsec duration. A reduction in the pulse duration reduced the dynamic range (i.e., the range of the pump energies) in which wavefront reversal was observed. Specially shaped pulses with different values of the contrast were used for the reversal of radiation with a high peak power.