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1.3 PHYSICAL SCIENCES
Self-diffraction from laser-induced gratings is observed in a 13 pm-thick film of rhodamine I3 doped epoxy. The decay of the grating is measured to be 2.05 ns. Degenerate forward four-wave mixing in a guided geometry is observed by coupling out all beams after nronagation over 1 mm. At 595 nm the third-order nonlinear susceptibility of the film is measured to be 1.5~10-‘~ m2Ve2.
Rossi, B., Byrne, H., Blau, W.: Degnerate Four-Wave Mixing in Rhodamine Doped Epoxy Waveguides. Applied Physics Letters, Vol. 58, 16, 22 April, 1991.