Estimation of enhancement in third-order nonlinear susceptibility induced by a sharpening absorption band

1989 ◽  
Vol 70 (6) ◽  
pp. 535-537 ◽  
Author(s):  
Tetsuzo Yoshimura
Keyword(s):  
Absorption Band ◽  
Nonlinear Susceptibility ◽  
Third Order ◽  
Third Order Nonlinear Susceptibility

Cu microcrystals in sol-gel derived glasses

1995 ◽  
Vol 10 (10) ◽  
pp. 2648-2652 ◽  
Author(s):  
Masayuki Nogami ◽  
Yoshihiro Abe ◽  
Arao Nakamura
Keyword(s):  
Surface Plasmon Resonance ◽  
Absorption Band ◽  
Optical Absorption ◽  
Sol Gel ◽  
Nonlinear Susceptibility ◽  
Third Order ◽  
Optical Absorption Band ◽  
Reducing Gas ◽  
Reducing Conditions ◽  
Third Order Nonlinear Susceptibility

Cu2+-containing SiO2 and Al2O5 · 9SiO2 glasses were prepared by the sol-gel method and heated under reducing conditions to precipitate small-sized Cu and Cu2O erystals. Cu2+ ions incorporated in SiO2 glass were reduced by heating in N2 to precipitate Cu2O and in H2 to precipitate Cu microcrystals with diameters of about 5 to 15 nm. Microcrystalline Cu-precipitated glass showed an optical absorption band at 560 nm and its third-order nonlinear susceptibility was 1.25 × 10−10 esu, which originated from the enhancement by the surface plasmon resonance of Cu particles. In contrast, Cu2+ ions incorporated in Al2O3 · 9SiO2 glass remained unchanged after heating in the reducing gas atmospheres.

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.

Sign in / Sign up

Export Citation Format

Share Document