2018
DOI: 10.1177/0003702818761671
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Linear and Nonlinear Thermal Lens Signal of the (Δν = 6) C–H Vibrational Overtone of Naphthalene in Liquid Solutions of n-Hexane

Abstract: The thermal lens technique is applied to vibrational overtone spectroscopy of solutions of naphthalene (CH) in liquid hexane. The C-H fifth vibrational (Δν = 6) overtone spectrum of CH is detected at room temperature for mole fractions from 0.08 to 19 × 10 using n-CH as solvent. By detecting the absorption band in a 19 ppm (parts per million) solution, the peak absorption of the signal is approximately (2.2 ± 0.3) × 10cm. A plot of normalized integrated intensity as a function of the mole fraction of naphthale… Show more

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Cited by 2 publications
(1 citation statement)
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“…[2][3][4] Two-color enhancement of thermal lens signals have been reported using two single line lasers to excite electronic levels of molecules and a probe to observe the magnitude of the absorption. [5,6] We have reported two-color absorption for vibrational overtones of benzene [7] and naphthalene [8] using two lasers (pump and probe). Vibrational overtone spectra using the thermal lens technique were initially reported by Albrecht, Swofford, and others.…”
Section: Introductionmentioning
confidence: 99%
“…[2][3][4] Two-color enhancement of thermal lens signals have been reported using two single line lasers to excite electronic levels of molecules and a probe to observe the magnitude of the absorption. [5,6] We have reported two-color absorption for vibrational overtones of benzene [7] and naphthalene [8] using two lasers (pump and probe). Vibrational overtone spectra using the thermal lens technique were initially reported by Albrecht, Swofford, and others.…”
Section: Introductionmentioning
confidence: 99%