Lanthanum aluminate  (KSHG-02)

Appearance：                  grey -cambridge blue pellets

Density：                     4.20g/cm³

Melting point：                1900℃

Transmittance scope：           0.4-7μ

Refractive index(500nm）：       1.70(Tsub≈300°C)

extinction coefficient:            1*10^-4

Vapour deposition temp.：        2100℃

Vapour deposition condition：     evaporated by electron gun

                              1.300℃,1 hour

                              2.d=2643A

                              3.APC=1.2-1.8E-2Pa

                              4.velocity:1.5-2.0A/second

Purity：          ＞99.99%

Applications：   anti-reflection film, interference filter