SPECIFICATION

Concentration

0.05wt%~0.35wt%

Absorption coefficient

0~7 cm^-1

Ground-state absorption cross-section  GSA(E^-19cm²)

2.8(±0.4)@1340nm

Excited state absorption cross-section  ESA(E^-20cm²)

2.0(±0.6)@1340nm

Ground-state absorption cross-section  GSA(E^-20cm²)

3.5(±0.4)@1540nm

Excited state absorption cross-section  ESA(E^-20cm²)

1.0(±0.6)@1540nm

Working wavelength  

1200~1600 nm

End Configuration

Flat/Flat

Figure of Merit(FOM)

100~300

Coatings    

AR/AR@1540，R<0.2%;
 AR/AR@1340，R<0.2%

PHYSICAL AND CHEMICAL PROPERTIES

Chemical formula

Co₂₊:MgAl₂O₄

Crystal structure

Cubic

Lattice parameters

8.07Å

Density

3.62 g/cm³

Melting Point

2105°C

Refractive Index

n=1.6948 @1.54 μm

Thermal Conductivity/(W·cm^-1·K^-1@25°C)

0.033W

Thermal Expansion /(10^-6  /°C@25°C )

1.046

Specific Heat/ (J·g^-1·K^-1)

5.9

Hardness (Mohs)

8.2

Extinction Ratio

25dB

Orientation

<100> or <111> < ±0.5°

Optical density

0.1~0.9

Damage Threshold

>500 MW/cm²

Doping concentration of Co₂₊

0.01-0.3 atm%