Abstract

The thermal nonlinear response of a waveguide produced by sputtering a Corning 7059 glass film over a nonlinear substrate (Corning CS2-61) is studied with a pump–probe technique in a quasi-cw regime. The coupling efficiency is found to be a function of pump power and chopping frequency. The coupling zone is scanned with a probe beam to examine the spatial dependence of the coupling efficiency.

© 1990 Optical Society of America

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