17 June 1994 New very sensitive double modulation techniques for the detection of high-resolution infrared absorption spectra of radicals, molecular ions, and excited states of stable molecules
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Abstract
Two new double modulation techniques for infrared absorption spectroscopy of transient molecules are described. Both of them are based in the modulation in concentration of the unstable species and the modulation in amplitude of the laser radiation. One of the methods is specific for short lived transients; the first results obtained with it for the H3 + spectrum are given. The other one is more suitable for longer lived species; it has been applied to the study of the 113 band of CH3 and vibrational excited states of methane.
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Concepcion Maroto Domingo, Concepcion Maroto Domingo, Isabel Tanarro, Isabel Tanarro, M. M. Sanz, M. M. Sanz, Juan Miguel Santos Santos, Juan Miguel Santos Santos, Dionisio Bermejo, Dionisio Bermejo, C. Aroca, C. Aroca, "New very sensitive double modulation techniques for the detection of high-resolution infrared absorption spectra of radicals, molecular ions, and excited states of stable molecules", Proc. SPIE 2124, Laser Techniques for State-Selected and State-to-State Chemistry II, (17 June 1994); doi: 10.1117/12.633722; https://doi.org/10.1117/12.633722
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