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SPINEL (MgAl2O4:Co2+)

Spinel crystal (MgAl2O4:Co2+) appears to be one of the most effective materials for passive laser shutters operating at l=1,3mm and l=1,55mm. The crystals with high optical quality and Co uniform distribution along crystal diameter and length are grown by Czochralski technique.

Characteristics of Spinel Crystal

Dimensions of crystals, mm

Length

Diameter

 

70

30

Syngony

cubic

Spatial group

Fd3m
Elementary cell parameters, nm
0.8086

Modulus of elasticity

2.3´105

Density, g/cm3

3.58

Mohs hardness

8-9

Melting point, °C

2105

Refraction index

1.718-1.75

CoO concentration, mass.%

0.05-0.3