Quantum theory of （femtosecond）time-resolved stimulated Raman scattering

Transient stimulated rotational Raman scattering induced by a polarization-modulated femtosecond pulse whose polarization varies with time is reported. The peak intensity of the polarization-modulated pulse produced in this study is low compared to that of a pulse without polarization variation, and this leads to the low efficiency of self-phase-modulation and thus the high efficiency of stimulated Raman scattering compared to the case of a pump pulse without polarization modulation. The scattering process is unique in terms of the high peak ratio of the anti-Stokes to Stokes emissions compared to the ratio in the case of the scattering induced by linearly, circularly, and elliptically polarized pump pulses. Under optimum conditions, the ratio approaches 1, which is not realized in the general case of stimulated rotational Raman scattering.Transient stimulated rotational Raman scattering induced by a polarization-modulated femtosecond pulse whose polarization varies with time is reported. The peak intensity of the polarization-modulated pulse produced in this study is low compared to that of a pulse without polarization variation, and this leads to the low efficiency of self-phase-modulation and thus the high efficiency of stimulated Raman scattering compared to the case of a pump pulse without polarization modulation. The scattering process is unique in terms of the high peak ratio of the anti-Stokes to Stokes emissions compared to the ratio in the case of the scattering induced by linearly, circularly, and elliptically polarized pump pulses. Under optimum conditions, the ratio approaches 1, which is not realized in the general case of stimulated rotational Raman scattering.

Physical Review AJun 3, 20088 citations

Stimulated Raman scattering in solid hydrogen: Measurement of coherence decay

J. Z. Li, M. Katsuragawa, Masaru Suzuki +1 more

Stimulated Raman scattering (SRS) is experimentally investigated for solid hydrogen in the context of the strong coupling. Coherence decay behaviors are measured for the Raman transition of $Q(0)$ $(\ensuremath{\nu}=1\ensuremath{-}0)$ using the time-resolved coherent anti-Stokes Raman-scattering method. We show that the coherence decay for the Raman transition changes with the evolution of the SRS from the weak-coupling regime to the strong-coupling regime.Stimulated Raman scattering (SRS) is experimentally investigated for solid hydrogen in the context of the strong coupling. Coherence decay behaviors are measured for the Raman transition of $Q(0)$ $(\ensuremath{\nu}=1\ensuremath{-}0)$ using the time-resolved coherent anti-Stokes Raman-scattering method. We show that the coherence decay for the Raman transition changes with the evolution of the SRS from the weak-coupling regime to the strong-coupling regime.

Physical Review AJul 1, 199832 citations

Stimulated Raman scattering (SRS) is experimentally investigated for solid hydrogen in the context of the strong coupling. Coherence decay behaviors are measured for the Raman transition of

Q(0)

$(\ensuremath{\nu}=1\ensuremath{-}0)$ using the time-resolved coherent anti-Stokes Raman-scattering method. We show that the coherence decay for the Raman transition changes with the evolution of the SRS from the weak-coupling regime to the strong-coupling regime.