Homogeneous and inhomogeneous broadenings and the Voigt line shapes in the phase-resolved and intensity sum-frequency generation vibrational spectroscopy

SL Chen, L Fu, W Gan, HF Wang - The Journal of Chemical Physics, 2016 - pubs.aip.org
In this report, we show that the ability to measure the sub-1 cm− 1 resolution phase-resolved
and intensity high-resolution broadband sum frequency generation vibrational spectra of the–
CN stretch vibration of the Langmuir-Blodgett (LB) monolayer of the 4-n-octyl-4′-
cyanobiphenyl (8CB) on the z-cut α-quartz surface allows the direct comparison and
understanding of the homogeneous and inhomogeneous broadenings in the imaginary and
intensity SFG vibrational spectral line shapes in detail. The difference of the full width at half …
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