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Solitary pulse generation by backward Raman scattering in H2-filled photonic crystal fibers.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Abdolvand, Amir Nazarkin, Alexander Chugreev, Alexey Kaminski, Clemens F. Russell, Philip St J. |
| Copyright Year | 2009 |
| Abstract | Using a hydrogen-filled hollow-core photonic crystal fiber as a nonlinear optical gas cell, we study amplification of ns-laser pulses by backward rotational Raman scattering. We find that the amplification process has two characteristic stages. Initially, the pulse energy grows and its duration shortens due to gain saturation at the trailing edge of the pulse. This phase is followed by formation of a symmetric pulse with a duration significantly shorter than the phase relaxation time of the Raman transition. Stabilization of the Stokes pulse profile to a solitonlike hyperbolic secant shape occurs as a result of nonlinear amplification at its front edge and nonlinear absorption at its trailing edge (caused by energy conversion back to the pump field), leading to a reshaped pulse envelope that travels at superluminal velocity. |
| Starting Page | 183902 |
| Ending Page | 183902 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevLett.103.183902 |
| PubMed reference number | 19905807 |
| Journal | Medline |
| Volume Number | 103 |
| Issue Number | 18 |
| Alternate Webpage(s) | http://laser.ceb.cam.ac.uk/publications/pdfs/solitary-pulse-generation-by-backward-raman-scattering-in-h2-filled-photonic-crystal-fibers |
| Alternate Webpage(s) | https://doi.org/10.1103/PhysRevLett.103.183902 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
