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Address: Room 1106, CIBC, No.198 Wuxing Rd, Hangzhou, P.R.China
Contact name:Xu
Hangzhou Freqcontrol Electronic Technology Ltd. |
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LiF Infrared Optics Used For Windows, Prisms And Lenses In Visible and Infrared Range
LiF crystal has excellent VUV region transmittance. It is used for windows, prisms, and lenses in the visible and infrared in 0.104 um - 7 um. LiF crystal is sensitive to thermal shock and would be attacked by atmospheric moisture at 400°C. In addition irradiation produces color centers. Modest precautions should be taken against moisture and high energy radiation damage. Besides LiF softens at 600°C and is slightly plastic that can be bent into radius plates. The material can be cleaved along (100) plane and less commonly (110) plane. The optical characteristics are good and yet the structure is not perfect and cleavage is difficult. For good structure LiF is less commonly grown by the Kyropoulos method (air-grown) specifically for monochromator plates. High quality LiF is usually grown by modified Bridgman method. Browse our lithium crystals for sale below.
Properties and Specifications: |
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Transmission Range (nm) | 105 ~ 6000 (6 µm) |
Refractive Index at 0.6 µm | 1.37327 @2.5 µm; 1.624 @0.121 µm |
Reflection Loss at 0.6 µm | 4.4% @4.0 µm |
Absorption Coefficient at 2.7 µm (cm-1) | 0.7 x 10-3 |
Density (g/cm3) | 2.639 |
Melting Point (°C) | 870 |
Thermal Conductivity at 314K (Wm-1K-1) | 4.01 |
Thermal Expansion at 283K (K-1) | 3 x 10-6 |
Knoop Hardness | 102 - 113 with 600g indenter |
Dielectric Constants | 9.0 @25°C, f = 100 - 109 Hz |
Specific Heat Capacity (J Kgm-1K-1) | 1562 |
Elastic Coefficient | C11=112; C12=46; C44= 63.5 |
Apparent Elastic Limit | 11.2 MPa (1620 psi) |
Poisson Ratio | 0.326 |
Solubility in 100g water at 20°C (g) | 0.27 |
Cleavage | (100) |
Sizes | Diameters of 145 mm or 200 mm. Custom sizes are available upon request |
Acceptance Check
1. The product is fragile. We have adequately packed it and labeled it fragile. We deliver through excellent domestic and international express companies to ensure transportation quality.
2. After receiving the goods, please handle with care and check whether the outer carton is in good condition. Carefully open the outer carton and check whether the packing boxes are in alignment. Take a picture before you take them out.
3. Please open the vacuum package in a clean room when the products are to be applied.
4. If the products are found damaged during courier, please take a picture or record a video immediately. DO NOT take the damaged products out of the packaging box! Contact us immediately and we will solve the problem well.
