Fig. 2: Calculating the FLIGBS value using the Tauc plot. | Light: Science & Applications

Fig. 2: Calculating the FLIGBS value using the Tauc plot.

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

Fig. 2

Relationship between (αhω)2 and hω for a ZnSe crystal sample before (black curve) and after (blue curve) photoinscription (pulse energy of 100 nJ with a scan speed of 5mm/s). Their transmission spectra through the sample with a thickness of d = 1 mm (including Fresnel losses) are shown in the inset

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