Self-compression of a femtosecond pulse due to Raman coherence of molecular rotations

Zaitsu Shin-Ichi, Yuichiro Kida, Totaro Imasaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The phenomena of self-modulation and self-compression of a femtosecond laser pulse due to a Raman-active medium of hydrogen, were investigated. It was observed that femtosecond pulses produce the Stokes emissions of ortho-hydrogen and para-hydrogen, depending on the input beam conditions. The shape of the output pulses was found to drastically change as a function of the Stoke emission intensity and total width of the spectrum. The results show that this was attributed to nonlinear modulation of the wave form, which was induced by coherent rotational motions of hydrogen molecules in the time domain.

Original languageEnglish
Article number031801
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume70
Issue number3
DOIs
Publication statusPublished - Jan 1 2004

Fingerprint

molecular rotation
pulses
ortho hydrogen
para hydrogen
modulation
hydrogen
output
lasers
molecules

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Self-compression of a femtosecond pulse due to Raman coherence of molecular rotations. / Shin-Ichi, Zaitsu; Kida, Yuichiro; Imasaka, Totaro.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 70, No. 3, 031801, 01.01.2004.

Research output: Contribution to journalArticle

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AB - The phenomena of self-modulation and self-compression of a femtosecond laser pulse due to a Raman-active medium of hydrogen, were investigated. It was observed that femtosecond pulses produce the Stokes emissions of ortho-hydrogen and para-hydrogen, depending on the input beam conditions. The shape of the output pulses was found to drastically change as a function of the Stoke emission intensity and total width of the spectrum. The results show that this was attributed to nonlinear modulation of the wave form, which was induced by coherent rotational motions of hydrogen molecules in the time domain.

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