Functional electro-optic polymer thin films embedded in microcavity structures have been poled by an all-optical procedure based on the interference of multiphoton absorption processes. The photoinduced <i>X</i><sup>(2)</sup> tensor was then further addressed at modal resonance for the fundamental wavelength, leading to significant enhancement of the second-harmonic-generation efficiency. An order-of-magnitude enhancement, which is due to electric field resonant conditions inside the microcavity, has been probed by an optical parametric oscillator, in comparison with a single-path thin-film configuration. This configuration opens new perspectives in the realm of nonlinear photonic device processing.
© 2000 Optical Society of America
(190.4180) Nonlinear optics : Multiphoton processes
(230.1150) Optical devices : All-optical devices
(230.3990) Optical devices : Micro-optical devices
(250.2080) Optoelectronics : Polymer active devices
R. Piron, E. Toussaere, D. Josse, S. Brasselet, and J. Zyss, "Polymer-based microcavity with photoencoded quadratic nonlinearity," Opt. Lett. 25, 1255-1257 (2000)