Title :
The electrical and optical properties of the nonlinear optical polymer DR1/PMMA films
Author :
Zhang, Hongyan ; Xia, Zhongfit ; Zhou, Shiming ; Ding, Hai ; Cao, Yang ; Lin, Huamao ; Zhu, Jianwei
Author_Institution :
Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China
Abstract :
The nonlinear optical material DR1/PMMA films were prepared by spin-coating method. The films were poled by constant voltage corona charging. Decay of surface potential was found to be slower at higher aging temperature (or poling) temperatures. The spectra of open-circuit (OC) and short-circuit (SC) TSD (Thermally Stimulate Discharge) were compared. One negative at 70°C and one positive peaks at 100°C were determined in open circuit TSD measurement. Only one negative broad peak appeared in short circuit TSD spectra. The OC first negative originated from the relaxation of polarization in the DR1/PMMA films, the second positive peak was due to the release of space charges. These two kinds of peaks usually emerge in polar materials. It indicated that the space charge was trapped to stabilize the polarization in polar materials. The second nonlinear optical effect and optical absorption in and near visible wavelength range was studied in the samples
Keywords :
dielectric polarisation; dielectric relaxation; nonlinear optics; optical films; optical polymers; polymer films; space charge; surface potential; thermally stimulated currents; DR1/PMMA film; aging; corona poling; electrical properties; nonlinear optical polymer; open-circuit TSD; optical absorption; optical properties; polar material; polarization relaxation; short-circuit TSD; space charge; spin coating; surface potential; Circuits; Corona; Nonlinear optics; Optical films; Optical materials; Optical polarization; Space charge; Stimulated emission; Temperature; Voltage;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578130
