Title :
Nonlinear optical properties of 0-3 fine composites
Author :
Xi Yao ; Liangying, Zhang ; Yu Han ; Zhongyang, Cheng ; Qifa, Zhou
Author_Institution :
Electron. Mater. Res. Lab., Xi´´an Jiaotong Univ., China
Abstract :
Ultrafine PbTiO3 (PT) powders were dispersed in liquid, polymer matrices to form 0-3 fine composites. Second harmonic generation (SHG) and degenerate four-wave mixing (DFWM) effects of the composite have been tested at λ=1.06 μm with an electric bias field applied on the sample. it is shown that the SHG efficiency can be modulated with an external bias field. In the nonresonant DFWM process, the liquid suspension of PT nanopowders could produce a larger gain for the conjugative backward reflectivity. These properties may be associated with the coupling effect between nanopowders and the external field
Keywords :
composite insulating materials; electrets; lead compounds; multiwave mixing; optical harmonic generation; powders; reflectivity; suspensions; PbTiO3; conjugative backward reflectivity; coupling effect; degenerate four-wave mixing; electrets; electric bias field; fine composites; liquid polymer matrices; liquid suspension; nanopowders; second harmonic generation; Composite materials; Nonlinear optics; Optical filters; Optical harmonic generation; Optical materials; Optical mixing; Optical pulses; Optical pumping; Powders; Pulse measurements;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167330