Interpretation Coherent Anti-Stokes Raman Spectroscopy (CARS) Spectral Profiles

1979 ◽  
Vol 33 (3) ◽  
pp. 268-273 ◽  
Author(s):  
W. M. Shaub ◽  
S. Lemont ◽  
A. B. Harvey
Keyword(s):  
Raman Spectroscopy ◽  
Frequency Shift ◽  
Experiment Design ◽  
Nonlinear Susceptibility ◽  
Spectral Profile ◽  
Third Order ◽  
Spectral Profiles ◽  
Signal Dependence ◽  
Anti Stokes ◽  
Third Order Nonlinear Susceptibility

CARS spectral profiles are functionally described by the variation of the square of the total third-order, nonlinear susceptibility with the anti-Stokes frequency shift. This inherent, squared susceptibility signal dependence, when weighted by an experiment dependent convolution, produces a CARS spectral profile which is a problem specific to the experiment design.

Glass Structures and Linea/Nonlinear Optical Properties of Ag2O-Doped TeO2 Glasses

2014 ◽  
Vol 617 ◽  
pp. 141-144 ◽  
Author(s):  
Yusuke Kasuya ◽  
Toshiki Suhara ◽  
Tomokatsu Hayakawa ◽  
Philippe Thomas ◽  
Masayuki Nogami
Keyword(s):  
Optical Properties ◽  
Absorption Edge ◽  
Photoelectron Spectroscopy ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Nonlinear Susceptibility ◽  
Third Order ◽  
Nonlinear Properties ◽  
Nonlinear Optical Devices ◽  
Third Order Nonlinear Susceptibility

A family of TeO2-based glasses is known to have high third-order nonlinear properties and expected as nonlinear optical devices. In the present study, we fabricated Ag2O-TeO2 and Ag2O-Nb2O5-TeO2 glasses, and estimated their structures and linear/nonlinear optical properties. The main results showed that the absorption-edge of the glasses was shifted to longer wavelength side with increasing Ag2O content. By Raman spectroscopy, it was found that an increase in Ag2O content promoted to change TeO4 to TeO3/TeO3+1 units. X-ray photoelectron spectroscopy (XPS) revealed the presence of an electronic state of Ag2+ ions, which was supposed to have a large influence on the absorption-edge wavelength. In Ag2O-Nb2O5-TeO2 glass system, the third-order nonlinear susceptibility χ(3) increased with increasing Ag2O content at the expense of Nb2O5 content.

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