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Jiaxing AOSITE Photonics Technology Co.,Ltd.
lif crystal
lif crystal
lithium fluoride window

LiF Window Crystals

Lithium Fluoride(LiF) is used for windows, lenses and prisms in the Vacuum UV, UV, visible and infrared where transmission in the range 0.104µm to 7µm is desired. Transmission is about 40% at 121nm. LiF is attacked by atmospheric moisture at 400C, and softens at 600C. LiF is sensitive to thermal shock. Irradiation produces color centers. The material can be cleaved along (100) and less commonly (110). Although the optical characteristics are good the structure is not perfect and cleavage is difficult. VUV grade LiF windows are available.

Application of LiF Lithium Fluoride Window Crystals


  • X-ray monochromator plates UV photomultiplier tubes

  • Optical material for VUV applications

  • Windows, prisms, and lenses


Advantages of LiF Lithium Fluoride Window Crystals


  • Excellent optical performance

  • Ideal for Applications Ranging from 120nm – 6μm

  • Good transmission in the VUV region


Specifications of LiF Lithium Fluoride Window Crystals


Orientation

Random or as requested

Size

Upon the customer’s request

Diameter Tolerance

+0/-0.1 mm

Thickness Tolerance

+/-0.1 mm

Aperture

>90%

Surface Quality

80/50~10/5 (S/D)

Parallelism

<1 arc minute

Chamfer

0.2-0.5mmx45°

Coating

Uncoated or upon customer’s request


Properties of LiF Lithium Fluoride Window Crystals


Transmission Range

0.12 to 6 microns

Refractive Index

1.392 at 0.6 micron

Refractive Loss

5.2% at 0.6 micron

Crystal/Class Structure

Cubic FCC, NaCl, Fm3m

Cleavage Plane

(100) Cleavage

Density

2.64 g/cc

Hardness(Knoop)

102 with 600g indenter

Youngs Modulus

64.97 GPa

Shear Modulus

55.14 GPa

Bulk  Modulus

62.03 GPa

Poisson Ratio

0.326

Elastic Limit

11.2 Mpa (1620psi)

Molecular Weight

25.94

Thermal Expansion

37×10^-6 K-1 at 283K

Thermal Conductivity

58.61 W m-1K-1 at 293K

Melting Point

936 ℃

Specific Heat Capacity

310 J Kg-1K-1

Solubility

0.27g/100g water at 20℃


Technical Images of LiF Lithium Fluoride Window Crystals

QQ图片20170625174710.png


Contact Us
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Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460