Options
1997
Conference Paper
Titel
Preparation of chi (2)-inverted waveguides with poled polymers for efficient second-harmonic generation
Abstract
Modal dispersion phase-matched second harmonic generation is demonstrated in polymer-based waveguides with a nonlinear optical core consisting of two side-chain polymers with different glass-transition temperatures. For an optimized overlap integral, a step-like nonlinearity profile ( chi (2)-inverted structure) is required across the core thickness. The chi (2)-inverted structure is achieved by two consecutive thermally assisted poling steps above and between the respective glass-transition temperatures, with an opposite poling field in the second poling step. The achieved chi (2)-inverted structure is monitored by in-situ electro-optic measurements and proved by electro-optic and second harmonic generation thermal analysis. Conversion efficiencies up to 7%/Wcm2 were achieved in first waveguide second-harmonic generation experiments.
Language
English
Tags
-
dielectric polarisation
-
electro-optical effects
-
integrated optics
-
optical harmonic generation
-
optical polymers
-
optical waveguides
-
thermal analysis
-
poled polymer chi (2)-inverted waveguides
-
poled polymers
-
second-harmonic generation
-
modal dispersion phase-matched second harmonic generation
-
polymer-based waveguides
-
nonlinear optical core
-
side-chain polymers
-
glass-transition temperature
-
optimized overlap integral
-
step-like nonlinearity profile
-
core thickness
-
thermally assisted poling steps
-
opposite poling field
-
in-situ electro-optic monitoring
-
electro-optic thermal analysis
-
second harmonic generation thermal analysis
-
conversion efficiency
-
waveguide second-harmonic generation