Abstract

It is well known that the multiple visible Stokes generation due to stimulated Raman scattering (SRS) of high-intensity ultrashort light pulses in long optical fibers (OF) could be realized. But the most effective parametric transformation of pump pulse energy in silica OF was demonstrated when the "phase-capture” regime for the same pump and Stokes pulses took place during the dynamic core index change by intensive picosecond light fields.¹ The whole number of Stokes SRS components in that case exceeds 20. Unfortunately, the Raman gain is diminished from the visible to the IR region and, as a rule, other nonlinear processes (for example, self-phase modulation and 4-photon mixing) became preferable in silica OF.

© 1994 IEEE