| Catalog No. | CY2305 |
|---|---|
| Size | 20x20x0.5mm, 10x10x0.5mm, 5x5x0.5mm |
| Material | CaCO3 |
| Orientation | <100>, <001> ±0.5º |
Stanford Advanced Materials (SAM) strictly selects natural growing calcium carbonate crystal substrates with high quality and competitive price.
Calcium carbonate (CaCO3) is a non-uniaxial crystal with large birefringence and wide spectral range. CaCO3 crystals are suitable for visible and near-infrared polarizing materials. CaCO3 is a mineral crystal with high birefringence and polarization characteristics. Calcium carbonate crystal substrate is mainly used in the defense industry and high-precision optical instruments, and has important applications in high-end radio and astrophysics.
|
Substrate |
CaCO3 substrate |
|
Crystal Structure |
Trigonal system |
|
Lattice constant |
a= 4.989 c= 17.062 |
|
Melting point |
1339 °C |
|
Density |
2.71 g/cm3 |
|
Thermal Conductivity |
4.646 W/m·K for 273 K |
|
Thermal expansion coefficient |
aa = 24.39 x10-6/K; ac = 5.68 x10-6/K Non-uniaxial: no=na=nb , ne=nc |
|
Refractive index |
no = 1.6557, ne = 1.4852, Dh = -0.1705, r = 6.20° at 0.63 um no = 1.6629, ne = 1.4885, Dh = -0.1744, r = 6.32° at 1.30 um |
|
Semi-equation (wavelength mm) |
no2= 2.69705 + 0.0192064/( λ 2 –0.01820) – 0.0151624 λ 2 ne2 = 2.18438 + 0.0087309/( λ 2 –0.01018) – 0.0024411 λ 2 |
|
Beam deviation |
< 3 arc min |
|
Transmitting wavefront distortion |
< l/2 @ 632.8 nm |
|
Transmission range |
350nm – 2300nm |
|
Orientation |
<100>, <001> ±0.5º |
|
Standard Size |
50x50x30mm, 1”x1”x1.0mm, 10x10x0.5mm, 5x5x0.5mm |
|
Polishing |
Fine ground, One side polished or Two side polished Surface Roughness(Ra) < 5A |
Calcium Carbonate Crystal Substrates are used in the defense industry and high-precision optical instruments
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