Optical constants of ZnGeP2 (Zinc germanium phosphide, ZGP)
Zelmon et al. 2001: n(e) 2–9 µm
Complex refractive index (n+ik)
Derived optical constants
Extraordinary ray (e); 21-22 °C.
D. E. Zelmon et al.. Refractive-index measurements and Sellmeier coefficients for zinc germanium phosphide from 2 to 9 µm with implications for phase matching in optical frequency-conversion devices, J. Opt. Soc. Am. B 18, 1307-1310 (2001)
Zinc germanium phosphide, ZnGeP2 (ZGP)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.
- Zinc germanium diphosphide