TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Wirges, Werner
A1  - Gerhard, Reimund
T1  - Dielectric investigation of photo-induced chromophore degradation in nonlinear optical side-chain polymer electrets
N2  - Organic materials with non-centrosymmetric chromophores are known to be susceptible to a number of photochemical processes, including reversible isomerization reactions as well as irreversible photo-oxidation or photo- reduction reactions. Reversible isomerization is the basis for a variety of applications, such as photo-induced poling, optical data storage and optical grating formation. The irreversible processes that involve the destruction of the chromophores have been found useful for the fabrication of optical waveguides, but they also limit the life times of polymeric photonic devices. In this paper, it is demonstrated that dielectric measurements allow for an in-depth investigation of non-reversible chromophore degradation processes in a typical side-chain polymer. The time- and temperature-dependent dielectric function of the polymer at 1 kHz enables us to follow the chromophore-degradation kinetics and to monitor the bleaching depth as a function of time at room and elevated temperatures
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Stracke, A.
A1  - Bayer, A.
A1  - Zimmermann, S.
A1  - Wendorff, Joachim Heinz
A1  - Wirges, Werner
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
T1  - Relaxation behaviour of electrically induced polar orientation and of optically induced non-polar orientation in an azo-chromophore side group polymer
Y1  - 1999
SN  - 0022-3727
ER  - 
TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Cheng, Z. Y.
A1  - Wirges, Werner
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
A1  - Das-Gupta, D. K.
T1  - Dielectric investigation of thermally-induced chromophore degradation in nonlinear optical polymer electrets
Y1  - 1998
ER  - 
TY  - JOUR
A1  - Donval, Ariela
A1  - Berkovic, Garry
A1  - Yilmaz, Sükrü
A1  - Bauer-Gogonea, Simona
A1  - Brinker, Walter
A1  - Wirges, Werner
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
T1  - Spatial and thermal analysis of nonlinearity created by asymmetric charge injection
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Wirges, Werner
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
A1  - Liang, J.
A1  - Zyss, Joseph
T1  - Electrical determination of the degree of cross-linking in a poled nonlinear optical polymer
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Wirges, Werner
A1  - Gerhard, Reimund
T1  - Preparation and pyroelectrical investigation of bimorph polymer layers
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Gerhard, Reimund
A1  - Bauer, Siegfried
A1  - Bauer-Gogonea, Simona
A1  - Brinker, Walter
A1  - Dinger, Claudia
A1  - Molzow, Wolf-Dietrich
A1  - Wirges, Werner
A1  - Yilmaz, Sükrü
T1  - Electro-optical investigation of the dipole orientation in poled polymers
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Bauer, Siegfried
A1  - Bauer-Gogonea, Simona
A1  - Yilmaz, Sükrü
A1  - Dinger, Claudia
A1  - Wirges, Werner
A1  - Gerhard, Reimund
A1  - Michelotti, F.
A1  - Toussaere, E.
A1  - Levenson, R.
A1  - Liang, J.
A1  - Zyss, Joseph
T1  - Pyroelectric, dielectric and electro-optical investigation of crosslinking in Red Acid Magly
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Wirges, Werner
A1  - Gerhard, Reimund
A1  - Wintler, H. J.
T1  - Physical aging after photo-induced or thermally assisted poling for enhancing the stability of polymeric dipole glasses
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Donval, Ariela
A1  - Berkovic, Garry
A1  - Bauer-Gogonea, Simona
A1  - Wirges, Werner
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
T1  - Pyroelectric depth profiling of the optical nonlinearity caused by charge injection
Y1  - 1995
ER  -