Title :
Dielectric investigation of thermally-induced chromophore degradation in nonlinear optical polymer electrets
Author :
Bauer-Gogonea, S. ; Cheng, Z.-Y. ; Wirges, W. ; Bauer, S. ; Gerhard-Multhaupt, R. ; Das-Gupta, D.K.
Author_Institution :
Heinrich-Hertz-Inst., Berlin, Germany
fDate :
2/1/1998 12:00:00 AM
Abstract :
One of the critical issues with poled photonic polymers is the thermal stability of the nonlinear optical effect in these dipolar electrets. The temporal decrease of the nonlinear optical coefficients is caused by dipolar-relaxation and molecular-degradation processes. In this paper, it is demonstrated that dielectric measurements allow for an in-depth investigation of dipole-degradation processes in a typical side-chain photonic polymer. The results yield an estimate of effective device lifetimes, which are in some cases dominated by irreversible chemical degradation rather than by reversible dipolar relaxation
Keywords :
dielectric polarisation; dielectric relaxation; nonlinear optics; optical polymers; photoelectrets; pyroelectricity; thermal analysis; thermal stability; thermally stimulated currents; dipolar-relaxation; dipole-degradation processes; effective device lifetimes; irreversible chemical degradation; molecular-degradation processes; nonlinear optical polymer electrets; poled photonic polymers; reversible dipolar relaxation; side-chain photonic polymer; thermal stability; thermally-induced chromophore degradation; Chemicals; Dielectric measurements; Electrets; Life estimation; Lifetime estimation; Nonlinear optical devices; Nonlinear optics; Optical polymers; Thermal stability; Yield estimation;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
