Saturation of the nonlinear refractive-index change in a semiconductor-doped glass channel waveguide

Banyai, W. C.; Finlayson, N.; Seaton, C. T.; Stegeman, G. I.; O’Neill, M.; Cullen, T. J.; Ironside, C. N.
February 1989
Applied Physics Letters;2/6/1989, Vol. 54 Issue 6, p481
Academic Journal
The saturated nonlinear refractive-index change in a CdSxSe1-x semiconductor-doped glass channel waveguide was measured with a picosecond pump-probe Mach–Zehnder interferometer at photon energies below the band gap. The pump-probe configuration permitted the resolution of competing thermal and electronic nonlinearities. The significance of the results for all-optical switching is discussed.


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