A model for ground-state and excited-state microwave optical double resonance |
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| Authors: | Richard F. Wormsbecher David O. Harris Brian G. Wicke |
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| Affiliation: | 1. Quantum Institute, University of California, Santa Barbara, Santa Barbara, California 93106 USA;2. Department of Chemistry, University of California, Santa Barbara, Santa Barbara, California 93106 USA |
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| Abstract: | A model is developed to describe the physical principles of both ground-state and excited-state microwave optical double resonance. This model uses a steady-state kinetic analysis to determine the populations of three quantum levels in the presence of two monochromatic radiation fields. The microwave transition rate and the laser transition rate are obtained from separate analyses using the semiclassical two-state transition probability averaged over the effects of collisions. The Doppler effect of the optical transition rate is explicitly included. The competing effects of laser power, microwave power, and pressure on signal intensity and lineshape are described. Calculated lineshapes and relative signal intensities based on this model are in good agreement with previous measurements on BaO and NO2. |
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