Abstract

Several experiments have been reported that relate to the measurement of the collisionless intramolecular energy transfer and dephasing rates for SF6. These measured relaxation times vary from less than 30 psec to 3 μsec. In addition, most measurements yield relaxation times that are comparable with the optical-pulse duration of the laser used in the measurement. We consider the effects of inhomogeneous and homogeneous dephasing processes in the optical interaction. The intensity and phase fluctuations in the laser and consequently the finite bandwidth of the optical source significantly affect this measurement. We present a simple model to account for the observed correlation with the optical-pulse duration.

© 1981 Optical Society of America

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