Yttrium Aluminate

Refractive Index: 1.9550
Abbe Number: 45.0
Crystal System: Isotropic (cubic)
Formation: Artificial
Dispersion Data: Approximate (from n, V)
Fits: 1

Refraction Fits

Fit #1— Cauchy from (n_D, V_D estimated from aluminate family)

Cauchy approximation

Valid 0.38–0.78 µm

$n$

n

= 1.9550

V_{D}

= 45.0

n (λ) = 1.923 + 0.011109/ λ^{2}

YAlO3; perovskite-structure synthetic used as laser host. No widely-cited Sellmeier; approximate from spec sheets. n_D from published gemological tables; V_D estimated from aluminate family because species-specific dispersion is not widely reported. Source: Winchell / GIA / Liddicoat compilations.