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Opt Lett. 1990 Dec 15;15(24):1431-3.

Spectral measurement of the nonlinear refractive index in ZnSe using self-bending of a pulsed laser beam.

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  • 1Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.


The nonlinear refractive-index (n(2)) spectrum of ZnSe near the band gap (lambda(gap) approximately 450 nm) at 77 K was measured for the first time to our knowledge by using self-bending of a pulsed laser beam. The maximum nonlinearity, n(2) approximately 1.9 x 10(-8) cm(2)/W, measured by us is anomalously large, which cannot be explained by conventional thermally induced band-gap shrinkage.

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