Optical constants of ZnGeP2 (Zinc germanium phosphide, ZGP)
Ghosh 1998: n(o) 0.7–12 µm; 350 K
Complex refractive index (n+ik)
Derived optical constants
Dispersion formula
$$n^2-1=3.64099213+\frac{5.14791199λ^2}{λ^2-0.13856847}+\frac{2.16952994λ^2}{λ^2-900}$$Conditions
temperature: 350 direction: o
Comments
Critical analysis of experimental data from multiple sources.
References
G. Ghosh. Sellmeier coefficients for the birefringence and refractive indices of ZnGeP2 nonlinear crystal at different temperatures. Appl. Opt., 37, 1205-1212 (1998)
Data
Additional information
About Zinc germanium phosphide
Zinc germanium phosphide (ZnGeP2, ZGP), is a non-linear optical material that has been widely used for frequency conversion in the mid-infrared range. It possesses a broad transparency range, high damage threshold, and phase-matching capabilities, making it a favored choice for a variety of laser applications. Owing to its ability to efficiently generate coherent radiation in the 2 to 12 µm spectral range, ZGP is especially relevant for molecular spectroscopy, environmental monitoring, and medical surgery. As a non-centrosymmetric crystal, ZGP can be employed for second harmonic generation, parametric oscillation, and other non-linear processes when exposed to suitable pump sources.
Other names and variations:- ZnGeP2
- ZGP
- Zinc germanium diphosphide