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Interference between stimulated Raman scattering and self-phase modulation in pressurized methane in highly transient femtosecond pump regime

Authors :
I. G. Koprinkov
Katsumi Midorikawa
Akira Suda
Source :
Optics Communications. 174:299-304
Publication Year :
2000
Publisher :
Elsevier BV, 2000.

Abstract

The mutual interference between the transient stimulated Raman scattering and the self-phase modulation was considered a long time ago [Phys. Rev. A 2 (1970) 60]. In this work we have studied experimentally, for the first time to our knowledge, the influence of the transient stimulated Raman scattering on the self-phase modulation, considering single-shot Raman spectra. The stimulated Raman scattering was excited in methane by 140 fs pulses of the fundamental wave of a Ti:sapphire laser. Narrowing of the Stokes spectrum and suppression of the self-phase modulation structure were observed with increasing Raman gain, in agreement with the theoretical predictions. The effect has been observed up to 40 atm of methane pressure.

Details

ISSN :
00304018
Volume :
174
Database :
OpenAIRE
Journal :
Optics Communications
Accession number :
edsair.doi...........807fdea6cad54784fd6100eaaa64df9d
Full Text :
https://doi.org/10.1016/s0030-4018(99)00688-4