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arXiv · 1202.4046

Coherent Ro-vibrational Revivals in a Thermal Molecular Ensemble

Martin Bitter·Evgeny A. Shapiro·Valery Milner
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Abstract

We report an experimental and theoretical study of the evolution of vibrational coherence in a thermal ensemble of nitrogen molecules. Rotational dephasing and rephasing of the vibrational coherence is detected by coherent anti-Stokes Raman scattering. The existence of ro-vibrational coupling and the discrete energy spectrum of the rotational bath lead to a whole new class of full and fractional ro-vibrational revivals. Following the rich ro-vibrational dynamics on a nanosecond time scale with sub-picosecond time resolution enables us to determine the second-order ro-vibrational constant $gamma_e$ and assess new possibilities of controlling decoherence.

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Martin Bitter, Evgeny A. Shapiro, Valery Milner. 2012-02-18. Coherent Ro-vibrational Revivals in a Thermal Molecular Ensemble. https://doi.org/10.1103/physreva.85.043410

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