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CaF2 Calcium Fluoride Crystals Optical Cubic Transparent In Wide Spetrum Band

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CaF2 Calcium Fluoride Crystals Optical Cubic Transparent In Wide Spetrum Band

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Place of Origin : China

Brand Name : CRYLINK

Certification : Iso9001

MOQ : 1 Pieces

Price : negotiation

Packaging Details : Carton

Delivery Time : 3-4 weeks

Payment Terms : TT

Supply Ability : 100 pieces /month

Model Number : CRYLINK-CaF2 Crystal

Name : CaF2 Optical Crystals

Type of Material : single crystal

Crystal Structure : Cubic Crystal, a=5.462

Cleavage Planes : (111)

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Calcium Fluoride—CaF2

Description

Calcium Fluoride (CaF2 or Fluorite) crystals are transparent in wide spectrum band. The product finds use in windows, lenses operating in UV and IR spectrum band. Laser Use: Calcium Fluoride is also used as a host lattice for laser crystals. Due to its composition, CaF2 has a much longer useful life than most materials when used in fluorine environment.

Calcium Fluoride is used for optical windows, drilled discs, lenses and prisms in transmission range 0.15-9m. Degradation due to moisture in the atmosphere is minimal, and polished surfaces of the CaF2 windows may be expected to withstand several years exposure to normal atmospheric conditions. Since they are nonaxial, CaF2 crystals do not require consideration of axial direction.

Because of CaF2 low refractive index, Calcium Fluoride windows can be used without an anti-reflection coating.Calcium Fluoride is attacked by atmospheric moisture at 600°C, where it begins to soften. The top use temperature is 800C, when moisture is not present. Irradiation of Calcium Fluoride windows causes some loss in UV transmission.

Features

Highest broadband transmittance fromdeep UV to IR (130 nm up to 8 microns)

Low refractive index (nd = 1.43384)

Low dispersion (vd = 95.23)

Maximum laser durability in ExcimerLaser optics (157nm, 193nm, 248 nm)

Applications

Achromatic microscope

Laser windows

CaF2 Achromatic lens

CaF2 lens

UV and IR Windows

Excimer Laser Optics

Cryogenically cooled thermal imaging

Material characteristics

Physical and chemical characteristics

Specification

Conventional

High Precision

Materials

CaF2

CaF2

Orientation

<100>, < ±0.5°

<001> or <100>, < ±0.2°

Parallel

10

10

Perpendicular

10

5

surface Quality

40//20

10//5

Wavefront Distortion

/4@632nm

/8@632nm

Surface Flatness

/4@632nm

/8@632nm

Clear Aperture

>95%

>95%

Chamfer

<0.2×45°

<0.2×45°

Thickness/Diameter Tolerance

±0.1 mm

±0.1 mm

Maximum dimensions

dia300×100mm

dia300×100mm

Type of Material

single crystal

Crystal Structure

Cubic Crystal, a=5.462

Cleavage Planes

(111)

Density

3.18 g/cm3

Melting Point

1360°C

Molecular Weight

78.08

Thermal Conductivity

9.71 Wm-1K-1 at 286K

Specific Heat

854 J/(kg.k)

Thermal Expansion

18.85


Product Tags:

CaF2 Calcium Fluoride Crystals

      

CaF2 Optical Crystals

      

Cubic CaF2 Crystals

      
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