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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1993),
  • paper QTuK41

Time-resolved optical double-resonance spectroscopy in acetylene: energy transfer at various levels of rovibrational excitation

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Abstract

Time-resolved optical double-resonance (DR) techniques allow us to investigate the mechanisms by which molecules transfer energy from one distinct rovibrational quantum state to another. The DR approach uses tunable laser excitation to prepare a molecule in a specific state and uses a second laser absorption step to characterise that excitation and to probe resulting state-to-state molecular energy transfer. We use either infrared (IR) absorption or coherent Raman excitation for state preparation, and we use ultraviolet (UV) laser-induced fluorescence (LIF) for detection. Our work emphasizes high state specificity and sensitivity, to provide insight into the intermolecular and intramolecular energy-transfer processes involved.

© 1993 Optical Society of America

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