Material
   Crystal Material
   Coating Material
Opticelement
   Spherical Lense
   Cylinder Lense
   Prism
   Windows
Coating
   MIR Coating
   FIR Coating
   UV Coating
   Visible Coating
   NIR Coating
   Optical Assembly
stockproduct
   Windows
   Lenses
   Prism
Adir
   Ad
   IR

Material


BAF2
         BaF2 is relatively hard but is highly sensitive to thermal shock. For its transmission range is 0.2 μm - 11 μm, the material is used for optical windows, lenses and prisms in UV-IR. Besides it can also be used as substrate for some applications. BaF2 is less resistant to attack by water than CaF2. Pronounced water attack occurs at 500 °C, but in a dry environment the material can be used to 800 °C. BaF2 is grown by modified Bridgman technique. Maximum available size: 200 mm Dia x 50 mm Thk. Besides, BaF2 is usually used as scintillator for gamma detection. It is the fastest scintillating crystals up to now.

Detail

Crystal Type

Cubic,CaFType structure

Transmission Range

0.15-15μm

Refractive Index

n=16654

n=1,4898@509nm

Density

4.89g/cm

Melting Point

1280,1335

Molecular Weight

175.3368

Thermal Conductivity

11.72W/(m K)@13

Specifics Heat

410J(kg K)@27

Thermal Expansion

18.110/K @ -110-120

Hardness (Knoop)

82 (indenter load:500g)

Shear Modulus

25.4GPa

Bulk Modulus

268.89GPa

Rupture Modulus

26.2MPa

Dielectric Constant

7.33 @f=2MHz

Solubility Water

0.17 g/100g @ 23

Crystal Structure

Single crystal, synthetic

Cleavage Planes

(111)

Application

Scintillation,material correction part in lens systems

 

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