Optical constants of ZnGeP2 (Zinc germanium phosphide, ZGP)
Das et al. 2003: n(o) 1.32–11 µm
Complex refractive index (n+ik)
Derived optical constants
Dispersion formula
$$n^2-1=4.67491+\frac{4.077926λ^2}{λ^2-0.159328}+\frac{1.896005λ^2}{λ^2-900}$$Comments
Ordinary ray (o)
References
S. Das, G. C. Bhar, S. Gangopadhyay, C. Ghosh. Linear and nonlinear optical properties of ZnGeP2 crystal for infrared laser device applications: Revisited. Appl. Opt. 42, 4335-4340 (2003)
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