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

Volume

5

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

21

Lastpage

25

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;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.660753

Filename

660753