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CY2305 Calcium Carbonate Crystal Substrates

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.




Description

Calcium Carbonate Crystal Substrates Description

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.

Calcium Carbonate Crystal Substrates Specifications

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 Applications

Calcium Carbonate Crystal Substrates are used in the defense industry and high-precision optical instruments

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