Characteristics of stimulated light generation and stimulated Raman scattering in anthracene crystals

Nonlinear optical phenomena in anthracene single crystals were investigated by focusing exciting radiation into a stripe of dimensions and direction corresponding to the dimensions and direction of the optically most homogeneous channels in a crystal. The intensity of stimulated emission in the 23 692 cm^–1 band in such a channel exceeded 2×10⁸ W/cm². Two Stokes components of stimulated Raman scattering wereobserved under these conditions: they were due to the scattering of the stimulated radiation excited in a crystal by an intramolecular vibration of 1403 cm^–1 frequency.