Abstract
A Stokes shifted superbroadening stimulated scattering has been studied in a liquid-core hollow fiber system with a long gain length (2.5 m) by using ≊10-ns laser pulses with a pump intensity range of (–5× W/). The salient features of this stimulated scattering are that the spectral broadening range is very large (≥700 ) and no detectable shift of the spectral maximum or periodical modulation structure is observed. In order to interpret our experimental results, various possible mechanisms and processes are discussed. A model based on stimulated Kerr scattering of anisotropic molecules in liquid is suggested to explain the observation. This model assumes a single-step reorientation of anisotropic molecules induced by an intense optical field.
- Received 18 September 1989
DOI:https://doi.org/10.1103/PhysRevA.41.2687
©1990 American Physical Society