|
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=2.67579+0.02099/(λ2-0.00470)-0.00528λ2
ne2=2.31197+0.01184/(λ2-0.01607)-0.00400λ2
|
| Wavelength(nm) |
no |
ne |
Birefringence
(Δn=ne -no) |
Walk-off Angle
at 45° |
|
1550 |
1.6346 |
1.5190 |
-0.116 |
4.19° |
|
1064 |
1.6396 |
1.5225 |
-0.117 |
4.23° |
|
800 |
1.6448 |
1.5259 |
-0.119 |
4.28° |
|
775 |
1.6456 |
1.5264 |
-0.120 |
4.29° |
|
632.8 |
1.6513 |
1.5301 |
-0.121 |
4.35° |
|
532 |
1.6582 |
1.5347 |
-0.124 |
4.42° |
|
400 |
1.6763 |
1.5471 |
-0.129 |
4.58° |
|
355 |
1.6876 |
1.5554 |
-0.132 |
4.66° |
|
266 |
1.7301 |
1.5900 |
-0.140 |
4.81° |
