Fig. 3: Sign inversion of the photoinduced refractive index change in ZnSe. | Light: Science & Applications

Fig. 3: Sign inversion of the photoinduced refractive index change in ZnSe.

From: Nonlinear increase, invisibility, and sign inversion of a localized fs-laser-induced refractive index change in crystals and glasses

Fig. 3

Experimental values of the fs-laser-induced refractive index change as a function of the propagating wavelength for different laser pulse energies and the theoretical (green dotted) curve from Eq. 4 with dλ1 = 1.26 nm and dN1 = −6.5 × 10−3 and using the Sellmeier coefficients from ref. 33

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