In:
Applied Physics Letters, AIP Publishing, Vol. 68, No. 8 ( 1996-02-19), p. 1040-1042
Kurzfassung:
The photoinduced nonlinearity decay in poled nonlinear optical polymer, polyurethane/Disperse Red 19, films was studied at wavelengths from 543 to 1320 nm. Electro-optic gratings and waveguide modulators were used in measuring and monitoring material’s nonlinearity. No photoinduced nonlinearity decay was detected at near infrared wavelengths. However, the photoinduced relaxation rate increased approximately 5 orders of magnitude from 670 to 543 nm, as the excitation wavelength approaches π-π* transition of the chromophores. The photoinduced chromophore reorientation was identified as the dominant relaxation mechanism.
Materialart:
Online-Ressource
ISSN:
0003-6951
,
1077-3118
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
1996
ZDB Id:
211245-0
ZDB Id:
1469436-0