Abstract

In this Letter, a novel method to evaluate nonlinear refractive index using time-resolved digital holographic microscopy is introduced. To demonstrate the viability of the method, cross-correlative nonlinear refractive index values for sapphire are measured experimentally: 2.75·1020  m2/W at 1030 nm and 4.10·1020    m2/W 515 nm wavelengths. The obtained results for sapphire are compared to those available in literature obtained by other methods.

© 2018 Optical Society of America

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