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Proceedings Paper

Self-induced focusing and defocusing of femtosecond pulses in Raman-active media
Author(s): Vladimir A. Isakov; Andrei P. Kanavin; Igor V. Smetanin
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Paper Abstract

The results of analytical and numerical investigation of the propagation of space-limited ultrashort (pulse duration is shorter than all the relaxation times and the time scale of the medium response) light pulse in Raman-active media are represented. This process shown reveals a number of novel specific features. It is found that at definite pulse energy the self- induced focusing is replaced by the self-induced defocusing which is again followed by the selffocusing. As a result a light channel which consists of a train of moving focuses occurs on the light beam axis. The rate of self-induced focusing and defocusing processes for this propagation regime is inversely proportional to the pulse field intensity, which is contrary to the conventional selffocusing theory.

Paper Details

Date Published: 10 May 1996
PDF: 7 pages
Proc. SPIE 2797, Nonlinear Spectroscopy and Ultrafast Phenomena, (10 May 1996); doi: 10.1117/12.239801
Show Author Affiliations
Vladimir A. Isakov, P.N. Lebedev Physical Institute (Russia)
Andrei P. Kanavin, P.N. Lebedev Physical Institute (Russia)
Igor V. Smetanin, P.N. Lebedev Physical Institute (Russia)


Published in SPIE Proceedings Vol. 2797:
Nonlinear Spectroscopy and Ultrafast Phenomena
Vladimir V. Shuvalov; Alexei M. Zheltikov, Editor(s)

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