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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Fizika / Physics (N002)
Author(s): Girdauskas, Valdas;Kazragytė, Renata;Bertašienė, Agnė;Dementjev, Aleksandr
Title: Cascaded compression of the first and second Stokes pulses during forward transient stimulated Raman amplification
Is part of: Optics communications. [Amsterdam] : North-Holland, Vol. 265, iss. 2 (2006)
Extent: p. 664-671
Date: 2006
Keywords: Raman amplification;Stokes pulse;SRS;Pulse compression;Numerical simulation
Abstract: The results of numerical modelling of cascaded compression of the first and second Stokes pulses during regenerative regime of the forward transient stimulated Raman amplification are presented for the case when the walk-off length of the first Stokes pulse due to group velocity mismatch is shorter than the length of the nonlinear medium. The influence of the initial amplitudes of the seed first Stokes pulses, its durations and its time delay with respect to the pump pulse, the Kerr nonlinearity of the medium on the conversion efficiency, duration and propagation factor M-2 of the first and second Stokes pulse are studied. It is demonstrated that for the pump pulse duration of 1 ps the duration of the compressed second Stokes pulses in a KGW crystal near the beam axis may be approximately 14 times shorter than the pump pulse duration. It is shown that the propagation factor of the compressed pulses increases significantly because of complex spatial-temporal dynamics of compression and the influence of Kerr nonlinearity of Raman medium
Affiliation(s): Fizikos institutas
Lietuvos energetikos institutas
Lietuvos energetikos institutas,
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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