Abstract

We have measured the nonlinear refractive-index coefficient γ interferometrically at 355 nm in fused silica and in BK-10, a borosilicate crown glass. These measurements are the first reported direct ultraviolet measurements of the nonlinear index of refraction in any transparent glass. Our results are γ = (2.5 ± 1.2) × 10⁻¹⁶ cm²/W and γ = (1.7 ± 0.8) × 10⁻¹⁶ cm²/W, respectively, for fused silica and BK-10.

© 1984 Optical Society of America

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