Progress in phase-sensitive sum frequency generation spectroscopy

2021 ◽  
Author(s):  
Shoichi Yamaguchi ◽  
Takuhiro Otosu
Keyword(s):  
Molecular Level ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Surfaces And Interfaces ◽  
Sum Frequency Generation Spectroscopy ◽  
Phase Sensitive ◽  
Frequency Generation

Sum frequency generation (SFG) spectroscopy is a unique and powerful tool for investigating surfaces and interfaces at the molecular level. Phase-sensitive SFG (PS-SFG) is an upgraded technique that can overcome...

scholarly journals High-resolution phase-sensitive sum frequency generation spectroscopy by time-domain ptychography

2020 ◽  
Vol 45 (21) ◽  
pp. 6082
Author(s):  
Tobias Schweizer ◽  
Bruno G. Nicolau ◽  
Priscila Cavassin ◽  
Thomas Feurer ◽  
Natalie Banerji ◽  
...  
Keyword(s):  
High Resolution ◽  
Time Domain ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Sum Frequency Generation Spectroscopy ◽  
Phase Sensitive ◽  
Frequency Generation

scholarly journals Surface sum-frequency vibrational spectroscopy of nonpolar media

2015 ◽  
Vol 112 (19) ◽  
pp. 5883-5887 ◽  
Author(s):  
Shumei Sun ◽  
Chuanshan Tian ◽  
Y. Ron Shen
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Inversion Symmetry ◽  
Reflection And Transmission ◽  
Spectroscopic Measurements ◽  
Sum Frequency ◽  
Sum Frequency Generation Spectroscopy ◽  
Phase Sensitive ◽  
Frequency Generation

Sum-frequency generation spectroscopy is surface specific only if the bulk contribution to the signal is negligible. Negligible bulk contribution is, however, not necessarily true, even for media with inversion symmetry. The inevitable challenge is to find the surface spectrum in the presence of bulk contribution, part of which has been believed to be inseparable from the surface contribution. Here, we show that, for nonpolar media, it is possible to separately deduce surface and bulk spectra from combined phase-sensitive sum-frequency vibrational spectroscopic measurements in reflection and transmission. The study of benzene interfaces is presented as an example.

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