HETERODYNE MEASUREMENTS AND FREQUENCY CALIBRATION TABLES FOR THE 11.6$\mu$ BAND OF CARBONYL SULFIDE (OCS)$^{*}$
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Date
1980
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Ohio State University
Abstract
Heterodyne difference frequency measurements between a $^{13}CO_{2}$ laser and a diode laser tuned (and in most cases locked) to the peaks of OCS absorption lines have been used to improve frequency calibration tables in the $860 cm^{-1}$ region by factor of 20 to 50. Measurements have been made on the vibrational transitions $10^{\circ}0-00^{\circ}0, 11^{1e}0-o1^{1e}0, 11^{1f}0-01^{1f}0$, and $20^{\circ}0-10^{\circ}$0 for $^{16}0^{12}C^{32}S$ and on the $10^{\circ}0-00^{\circ}0$ and $^{11}10-01^{1}0$ transitions for $^{16}O^{13}C^{32}S$. The measurements on the $10^{\circ}0-00^{\circ}0$ and $20^{\circ}0-10^{\circ}0$ transitions can also be used to provide frequency calibration tables for the $20^{\circ}0-00^{\circ}0$ band of OCS near $1700 cm^{-1}$.
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$^{*}$ This work was supported in part by the Upper Atmospheric Research Office of the National Aeronautics and Space Administration.
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