Refinements in the instrumentation of a diode-laser heterodyne spectrometer permit the rapid and routine measurement of infrared absorptions lying within 6.5 GHz of a CO2 laser emission to a precision and accuracy well within 10 MHz. Measurements on 1,1-difluoroethylene, which is used in optically pumped submillimeter-wave lasers, illustrate the technique.
© 1980 Optical Society of America
Original Manuscript: August 29, 1979
Published: January 1, 1980
J. P. Sattler, W. J. Lafferty, T. L. Worchesky, and K. J. Ritter, "Technique for wideband, rapid, and accurate diode-laser heterodyne spectroscopy: measurements on 1,1-difluoroethylene," Opt. Lett. 5, 21-23 (1980)