Stimulated Raman scattering in micrometer-sized droplets: measurements of angular scattering characteristics

Abstract
Measurments of the angular scattering characteristics of elastic and stimulated Raman scattering (SRS) in single(nominal 20-μm-radius) water, ethanol, and CCl4 droplets irradiated with 0.532-μm-wavelength radiation from a pulsed laser demonstrate that SRS is more isotropic than elastic scattering yet qualitatively mimics angularly smoothed elastic scattering patterns. The angular fine structure characteristic of the coherent elastic scattering process is lacking in SRS, regardless of whether the SRS derives from multiple orders of Stokes shifts, multiple resonances within a single Stokes shift, or single resonances within a single Stokes shift.