Gadolinium Gallium Garnet

Refractive Index: 1.9701
Abbe Number: 38.1
Crystal System: Isotropic (cubic)
Formation: Artificial
Dispersion Data: Measured (published fit)
Fits: 1

Refraction Fits

Fit #1— Wood & Nassau 1990

Sellmeier

Valid 0.36–6 µm

$n$

n

= 1.9701

V_{D}

= 38.1

n^{2} = 1 + \frac{1.7727 λ ^{2}}{λ ^{2} - 0.024555} + \frac{0.9767 λ ^{2}}{λ ^{2} - 0.000189} + \frac{4.9668 λ ^{2}}{λ ^{2} - 5.160 e + 2}

D.L. Wood & K. Nassau, "Optical properties of gadolinium gallium garnet," Appl. Opt. 29, 3704–3707 (1990). Three-term Sellmeier fit, consistent across tested crystals, valid 0.36–6.0 µm.