Solitons in Stimulated Raman Scattering: Generation and Control of Ultrashort Optical Pulses.
Abstract
A numerical and analytical study of soliton propagation and generation in a Raman amplifier is performed. Parameters are amplitude and temporal profile of input optical fields, Raman line width and detuning. Soliton excitations will develop, if a phase shift of nearly 180 degrees is introduced into the Stokes seed beam. In the absence of detuning and for an instantaneous phase shift of exactly 180 degrees the solitons wil be stable. In the presence of detuning and for non instantaneous phase shifts of less than 180 degrees the solitons will be unstable and decay for sufficiently large gain. Limiting values are about 10% detuning relative to the Raman line width, and a fractional, unshifted Stokes intensity of about 1%. Stable solitons will show temporal narrowing with a width inversely proportional to the square root of the total gain. For large gain the final width is independent of the initial width. Unstable solitons will reach minimal width at a relative amplitude of .5, and begin to broaden on further propagation. The minimal width is proportional to the initial width and the initial relative amplitude. Keywords: Raman Scattering; Solitions; Ultrashort Optical Pulses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1986
- Accession Number
- ADA165744
Entities
People
- Kai J. Druhl
Organizations
- University of New Mexico