MICROWAVE OPTICAL DOUBLE RESONANCE SPECTROSCOPY OF BaO
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Date
1972
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The feasibility of optical detection of rotational transitions has been established in a microwave optical double resonance experiment on $BaO.^{1}$ Laser excited fluorescence is used to monitor the population of a ground state rotational level. This population is altered by applying a microwave field at the frequency of a rotational transition involving the monitored level. Typical linewidths (FWHM) of 3.5 MHz are observed with no apparent dependence on pressure (0.02 to 2 torr). The linewidth is broadened by increased laser or microwave power density. An investigation is under way to determine factors contributing to the signal-to-noise ratio in microwave optical double resonance experiments. Fluorescent intensity is sufficient to allow resolution of individual rotational lines, thus transitions due either to a resonant microwave field to collisions can be observed in the excited state. Specifically we hope to report the observation of the $J ^{\prime} = 3 \rightarrow 2$ transition in the $A ^{1} \Sigma (v ^{\prime} = 7)$ electronic excited state. This work was supported in part by Army Grant No. DA-ARO-D-31-124-71-G179, NSF Grant No. GP-24373, and AFOSR Grant No. AFOSR-70-1851.
Description
$^{1}$ R.W. Field, et al., J. Chem. Phys. (submitted).""
Author Institution: The Quantum Institute, University of California
Author Institution: The Quantum Institute, University of California