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          Institute: MPI für die Physik des Lichts     Collection: Photonics and New Materials     Display Documents



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ID: 458877.0, MPI für die Physik des Lichts / Photonics and New Materials
Solitary Pulse Generation by Backward Raman Scattering in H-2-Filled Photonic Crystal Fibers
Authors:Abdolvand, A.; Nazarkin, A.; Chugreev, A. V.; Kaminski, C. F.; Russell, P. S.
Date of Publication (YYYY-MM-DD):2009-10-30
Title of Journal:Physical Review Letters
Volume:103
Issue / Number:18
Sequence Number of Article:183902
Audience:Not Specified
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:N. N.
Affiliations:MPI für die Physik des Lichts
External Affiliations:[Abdolvand, A.; Nazarkin, A.; Chugreev, A. V.; Russell, P. St. J.] Max Planck Inst Sci Light, D-91058 Erlangen, Germany.; [Kaminski, C. F.] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England.; [Kaminski, C. F.] Univ Erlangen Nurnberg, SAOT, Erlangen, Germany.
Identifiers:ISI:000271352400018 [ID No:1]
ISSN:0031-9007 [ID No:2]
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