Momgaudis Balys, Guizard Stephane, Bilde Allan, Melninkaitis Andrius
Opt Lett. 2018 Jan 15;43(2):304-307. doi: 10.1364/OL.43.000304.
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: 2.75·10 m/W at 1030 nm and 4.10·10 m/W 515 nm wavelengths. The obtained results for sapphire are compared to those available in literature obtained by other methods.
