Jf. Roux et al., 2-PHOTON-ABSORPTION-INDUCED LUMINESCENCE IN ORGANIC WAVE-GUIDE COUPLERS, Journal of the Optical Society of America. B, Optical physics, 12(3), 1995, pp. 428-433
We report the enhancement of two-photon-absorption-induced luminescenc
e of a polymer film when a guided mode of the film is excited at the p
ump frequency, with a diffraction grating as optical coupler. The resu
lts show the double excitation of a guided mode at the pump frequency
and of other guided modes at the luminescence broadband frequency. We
also present experimental results of second-harmonic generation with s
uch a device in which the effects of both absorption and diffraction a
re observed.