Who we are

Our Service for you

Webshop

We will shortly be offering a large selection of optical components for the Infrared to Ultraviolet regions of the spectrum in our web shop.

Skip navigation

Our optical components are suitable for a wide range of applications. If you are interested in a particular area, please click on the link below.

Calcite (
CaCO₃
)

Properties (CaCO₃)
Transmission Range	0.25 ... 2.3 µm
Refractive Index	n_o = 1.6654 @509 nm	n_e = 1.4898 @509 nm
Density	2.711 g/cm³ @25°C
Melting Point	1339°C
Molecular Weight	100.9
Thermal Conductivity	\|\| 5.526 W/m·K for 273 K	4.646 W/m·K for 273 K
Specific Heat	200 J/K·kg
Thermal Expansion	\|\| 2.5·10^-5	5.68·10^-6
Hardness (Mohs)	155 K (3 Mohs)
Young`s Modulus	72.35 GPa	88.19 GPa
Shear Modulus	35 GPa
Bulk Modulus	129.6 GPa
Rupture Modulus	4.83 MN/m²
Elastic Coefficient	C₁₁= 149 GPa; C₁₂= 57.9 GPa;	C₁₃= 53.5 GPa; C₃₃= 85.2 GPa; C₄₄= 34.1 GPa
Dielectric Constant	\|\| 8 for 10⁴ Hz at 293 K	8.5 for 10⁴ Hz at 293 K
Solubility in Water	1.4 · 10^-3 g/100g @25°C
Type of Material	Single crystal, synthetic
Crystal structure	triangular, rhombic	a = 4.989 c = 17.062, Space group R-3c
Cleavage Planes	(1011)
Standard diameter
Application	polarisers

Transmission spectrum

NOTICE: While we endeavour to ensure that the information on this Website is correct, we do not warrant the accuracy and completeness of the material on this Website.

Material

Please click on the link below for more information about our materials or choose from the transmission curve. Here you can select the correct material for your spectral range. Please click on the link on the left.

This symbol denotes crystal grown in-house.