|
Transparency Range: 189 - 3500 nm |
Transmission Curve |
|
Crystal Symmetry: Hexagonal R3c |
|
Lattice
Symmetry: a=b=7.2351A,c=39.192A
|
|
Density: 3.85 g/cm3 |
Thermo-Optic Coefficients:
dno/dT= - 9.3 x 10-6 /oC
dne/dT= - 1 6 .6 x 10-6/oC
|
Damage Threshold ( 10ns, 10Hz)
at 1064 nm 1GW/cm2
at 532 nm 500 MW/cm2 |
|
Optical Homogeneity: Δn < 10-6/cm
|
|
Mohs Hardness: 4.5 |
Thermal Expansion Coefficients
(in the range of 25–900oC) |
αa = 4 x 10-6/K
αc = 36 x 10-6/K
|
|
Linear Absorption Coefficients:
α<0.005cm-1 from 300 to 2300 nm |
|
Sellmeier Equations
(λ
in
µm)
:
no2=2.7471+0.01878/(λ2-0.01822)-0.01354λ2
ne2=2.3174+0.01224/(λ2-0.01667)-0.01516λ2 |
| Wavelength(nm) |
no |
ne |
Birefringence
(Δn=ne -no) |
Walk-off Angle
at 45° |
|
1064 |
1.6579 |
1.5203 |
-0.137 |
4.94° |
|
800 |
1.6639 |
1.5256 |
-0.138 |
4.95° |
|
532 |
1.6776 |
1.5359 |
-0.142 |
5.03° |
|
400 |
1.6963 |
1.5493 |
-0.147 |
5.16 |
|
355 |
1.7087 |
1.5580 |
-0.152 |
5.26° |
|
266 |
1.7618 |
1.5946 |
-0.167 |
5.67° |
