Title :
Influence of Ag content on third order nonlinear optical susceptibility of ZnSe single crystals
Author :
Derkowska, B. ; Sahraoui, B. ; Phu, X. Nguyen ; Bala, W.
Author_Institution :
Lab. des Proprietes Optiques des Mater. et Applications, Univ. d´´Angers, France
fDate :
6/24/1905 12:00:00 AM
Abstract :
We have investigated the influence of the Ag content on third order nonlinear optical susceptibility (χ<3>) of ZnSe single crystals. It was measured by two independent experimental techniques: third harmonic generation (THG) at 1.907 μm and degenerate four wave mixing (DFWM) at 0.532 μm methods. The results of DFWM measurements show that the third order nonlinear optical susceptibility (χ<3>) decreases with the increase of the Ag content. The results of THG and DFWM will be correlated via multilevel quantum models. Also the two photon absorption coefficient (β) of Zn1-xAgxSe (x ≤ 0.20) crystals were investigated using the transmission method. The experimental results show that the imaginary part of third order nonlinear optical susceptibility (χ<3>) decrease with increase of Ag content.
Keywords :
II-VI semiconductors; absorption coefficients; multiwave mixing; nonlinear optical susceptibility; optical harmonic generation; optical materials; silver; two-photon processes; zinc compounds; 0.532 micron; 1.907 micron; Ag content; DFWM measurements; ZnSe:Ag; ZnSe:Ag single crystals; degenerate four wave mixing; imaginary part; independent experimental techniques; third harmonic generation; third order nonlinear optical susceptibility; transmission method; two photon absorption coefficient; Absorption; Nonlinear optical devices; Nonlinear optics; Optical harmonic generation; Optical mixing; Optical modulation; Photonic band gap; Photonic crystals; Stimulated emission; Zinc compounds;
Conference_Titel :
Transparent Optical Networks, 2002. Proceedings of the 2002 4th International Conference on
Print_ISBN :
0-7803-7375-8
DOI :
10.1109/ICTON.2002.1009523
