Picosecond stimulated Raman effect in ethanol

Abstract

Time delays in the stimulated Raman emission from ethanol, excited with a mode locked Nd3+ glass laser, have been studied using echelons associated with a Kerr cell. By taking into account group velocity variations in all the dispersive media traversed by the light beam, the true time resolution of the spectrum has been determined. Our results indicate that there is no time delay between the Stokes, Rayleigh (laser pulse), and anti-Stokes bands. With regard to the Stokes and Rayleigh bands, this agrees with a theoretical prediction for our experimental conditions.