Power-dependent coupling and fast switching in distributed coupling to ZnO waveguides

Fortenberry, R. M.; Moshrefzadeh, R.; Assanto, G.; Mai, Xu; Wright, E. M.; Seaton, C. T.; Stegeman, G. I.
September 1986
Applied Physics Letters;9/22/1986, Vol. 49 Issue 12, p687
Academic Journal
A 20-fold decrease in the efficiency of prism coupling into low-loss ZnO waveguides was found with increasing incident power at 0.532 μm. All-optical switching in the temporal envelope of 10 ns laser pulses was interpreted theoretically in terms of an absorptive nonlinearity with a relaxation time much slower than the pulse width.


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