Heterodyne difference frequency measurements between a 13CO2 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 factors of 20–50. Measurements have been made on the vibrational transitions 1000–0000, 1110–0110, and 2000–1000 for OCS. The measurements on the 1000–0000 and 2000–1000 transitions are also used to provide frequency calibration tables for the 2000–0000 band of OCS near 1700 cm−1.
© 1981 Optical Society of America
Original Manuscript: December 4, 1980
Published: May 1, 1981
J. S. Wells, F. R. Petersen, A. G. Maki, and D. J. Sukle, "Heterodyne frequency measurements on the 11.6-μm band of OCS: new frequency/wavelength calibration tables for 11.6- and 5.8-μm OCS bands," Appl. Opt. 20, 1676-1684 (1981)