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19 October 1983 Absorption Measurements Using Frequency Modulation Heterodyne Spectroscopy
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Abstract
Direct absorption. measurements using Frequency. Modulation. Spectroscopy (FMS) have been made. Simple calibration is possible and DC absorptions as small as 1.4x10-4 may be detected. By modulating the absorption photochemically, the sensitivity may be extended to a lower limit of 1.5x10-7. The radicals HCO1 and ND4 have been studied using this method.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward A . Whittaker and Gary C. Bjorklund "Absorption Measurements Using Frequency Modulation Heterodyne Spectroscopy", Proc. SPIE 0426, Laser-Based Ultrasensitive Spectroscopy and Detection V, (19 October 1983); https://doi.org/10.1117/12.936241
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