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

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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.

Caesium Bromide (
CsBr
)

Properties (CsBr)
Transmission Range	0.22 - 55 µm
Refractive Index	1.66247 @10 µm
Reflective Loss	11.6% @10 µm
Reststrahlen	125 µm, 97 µm
Density	4.44 g/cm³
Melting Point	636°C
Molecular Weight	212.83
Thermal Conductivity	0.835 W/(m·K) @25°C
Specific Heat	264 J/(kg·K) @20°C
Thermal Expansion	47.9 · 10^-6/°C (@20...50°C)
Hardness (Mohs)	19.5 (Indenter load 200g)
Young`s Modulus	15.85 GPa
Shear Modulus	7.5 GPa
Bulk Modulus	13.01 GPa
Rupture Modulus	8.4 MPa
Elastic Coefficient	C₁₁ = 30.7; C₁₂ = 8.4; C₄₄ = 7.5 GPa
Dielectric Constant	6.51 @f = 2MHz
Solubility in Water	124.3 g/100g @25°C
Type of Material	Single crystal, synthetic
Crystal Structure	cubic, CsCl type structure, a = 4,2953 Å
Cleavage Planes	no cleavage
Standard Diameter	70 mm, 100 mm
Application	windows and prisms for IR, FIR spectroscopy
Remarks	Sensitive in combination with moisture, soluble in weak alcohol, max. temperature for application: 400°C

Transmission spectrum

Transmission spectrum-2

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.