Enhanced scattering of higher-order anti-Stokes waves by polarization switching.

The polarization-switching technique has been successfully applied to the enhancement of scattered anti-Stokes powers in the ultraviolet region. Anti-Stokes waves up to the fifth order were observed in stimulated rotational scattering of hydrogen, and their pulse widths were approximately 300 psec (FWHM), which is shorter than the dephasing time of the medium and the switching time.