TY - JOUR
T1 - Dispersion of Complex Refractive Indices for Intense Vibrational Bands. II. Implication to Sum Frequency Generation Spectroscopy
AU - Wang, Lin
AU - Murata, Ryo
AU - Inoue, Ken Ichi
AU - Ye, Shen
AU - Morita, Akihiro
N1 - Funding Information:
We thank Drs. Satoshi Nihonyanagi and Tahei Tahara for valuable comments. This work was supported by the Grants-in-Aid for Scientific Research (Nos. 18H05265, 19K15496, 20H00368) by Japan Society for the Promotion of Science, Leading Initiative for Excellent Young Researchers (LEADER) from Ministry of Education, Culture, Sports, Science and Technology, Japan, and Strategic International Collaborative Research Program (SICORP, No. JPMJSC18HA) by Japan Science and Technology Agency.
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/9/2
Y1 - 2021/9/2
N2 - Sharp and intense vibrational bands are characterized with conspicuous dispersion of complex refractive indices. Based on the quantitative data of dispersion in the preceding paper, this paper clarifies the influence of the dispersion on the sum frequency generation (SFG) spectroscopy. As a consequence of the large dispersion, the lineshapes of SFG spectra could be influenced by the frequency dependence of the Fresnel factor as well as the nonlinear susceptibility. This paper argues the relative importance of the two factors in general cases and provides a useful criterion to evaluate their importance. The effect of Fresnel dispersion becomes significant when the SFG spectrum involves a sharp and intense vibrational band as well as a large non-resonant background susceptibility, typically in some solid-liquid interfaces. A possible way to correct the effect of Fresnel dispersion is suggested using the heterodyne measurement.
AB - Sharp and intense vibrational bands are characterized with conspicuous dispersion of complex refractive indices. Based on the quantitative data of dispersion in the preceding paper, this paper clarifies the influence of the dispersion on the sum frequency generation (SFG) spectroscopy. As a consequence of the large dispersion, the lineshapes of SFG spectra could be influenced by the frequency dependence of the Fresnel factor as well as the nonlinear susceptibility. This paper argues the relative importance of the two factors in general cases and provides a useful criterion to evaluate their importance. The effect of Fresnel dispersion becomes significant when the SFG spectrum involves a sharp and intense vibrational band as well as a large non-resonant background susceptibility, typically in some solid-liquid interfaces. A possible way to correct the effect of Fresnel dispersion is suggested using the heterodyne measurement.
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U2 - 10.1021/acs.jpcb.1c06190
DO - 10.1021/acs.jpcb.1c06190
M3 - Article
C2 - 34431668
AN - SCOPUS:85114324453
VL - 125
SP - 9804
EP - 9810
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 34
ER -