Cancellation of Raman self-frequency shift for compression of optical pulses
- Pickartz, Sabrina
- Brée, Carsten
- Bandelow, Uwe
- Amiranashvili, Shalva
2010 Mathematics Subject Classification
- 78A60 78M22 78-06
2008 Physics and Astronomy Classification Scheme
- 42.65.-k 42.81.Dp 42.65.Dr 05.45.Yv
- Ultrashort pulses, pulse compression, soliton self-frequency shift, optical event horizons
We study to which extent a fiber soliton can be manipulated by a specially chosen continuous pump wave. A group velocity matched pump scatters at the soliton, which is compressed due to the energy/momentum transfer. As the pump scattering is very sensitive to the velocity matching condition, soliton compression is quickly destroyed by the soliton self-frequency shift (SSFS). This is especially true for ultrashort pulses: SSFS inevitably impairs the degree of compression. We demonstrate numerically that soliton enhancement can be restored to some extent and the compressed soliton can be stabilized, provided that SSFS is canceled by a second pump wave. Still the available compression degree is considerably smaller than that in the Raman-free nonlinear fibers.
- Opt. Quantum Electron., 49 (2017), published online on 21.09.2017, DOI 10.1007/s11082-017-1164-7 .