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LiF Optical Crystals

Lithium Fluoride (LiF) shows an excellent transmittance in range between 110nm to 7μm, transmission between these ranges is over 90%, it widespread used in applications of VUV, visible, and IR spectrum, such as optical windows, optical lens, optical mirrors etc. LiF crystals sensitive to thermal shock and it does degrade by atmospheric moisture at 400°C and softens at 600°C. 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. High quality LiF is usually grown by modified Bridgman technique.

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Product Details


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1. Excellent transmission from 110nm to7μm

2  Optically isotropic, middle hard

3.  Insoluable in water

4. Sensotive to thermal shock


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                               X-Ray spectroscopy                                           UV transmission Window  

》More information about LiF: Wikipedia

                 

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Low bulk absorption

High Purity raw materials >99.999%

Low bulk absorption

Advanced raw material pre-sintering process

Advanced raw material pre-sintering process

No poly-crystalline defects


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① Full automatic controlled crystal growth furnace High yield

② Advanced CZ Method Crystalline Process Stable quality control

③ Systematic batch packing classification

》More information about Equipments


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Maximum boule size >dia50mm

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Absorption coefficient at 2.7 um 0.74x10-3

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Co(2+) concentration increased by post-annealing process,high Q-switch efficiency

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High doping concentration gradient homogeneity , typical value<0.02cm-1/inch

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No bubbles, scatering point and inclusions in crystals

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No grain boundary in crystals

》More information about Crystal Growth


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High level dust-free clean room 

(1000) grade)


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2-sides polishing equipments


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AFM


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Interferometer

Advance CMP process, Ra<0.4nm          

        Grade I                                              Grade II                                              Grade III

        Surface quality: >80/50                    Surface quality:< 40/20                     Surface quality:< 60/40                                        Flatness: >λ/8                                   Flatness:  <(λ/4-λ/6) @632nm          Flatness: <(λ/2-λ/4) @632nm 

》More information about Polishing


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ZPCL1H3%D0QF71F_F5AW5GM.png       Customized coating service 

     S1,S2:AR/AR@1535-1540nm

     S1,AR@1535-1540nm,HR@940-980nm

     S1,AR@1535-1540nm

》More information about Coating


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PropertyValue
Chemical formulaCo2+:MgAl2O4
Crystal structureCubic
Lattice parameters4.026Å
Density2.64 g/cm3
Melting Point870°C
Refractive Indexn=1.387 @1.0 μm
Thermal Conductivity at 314K (Wm-1K-1)4.01
Thermal Expansion@283k (K-1)1.046
Specific Heat/ (J·kgm-1·K-1)1562
Hardness (Mohs)102
Orientation[100] or [111] < ±0.5°
Poisson Ratio0.326
Solubility in 100g water at 20°C0.27
Absorption coefficient at 2.7um ((cm-1)0.74x10-3

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PropertyValue
Spectal RangeUV, VIS, IR
Surface quality60-40 S&D
Clear aperture90% of the diameter
Diameter toleranceDiameter tolerance
Thickness tolerance±0.1
Surface flatnessλ/4 @ 633 nm
Parallelism<3 arcmin
                                                            Polishing Specification for Optical Grade I
Orientation Tolerence< 1°
Thickness/Diameter Tolerance±0.10 mm
Surface Flatness<(λ-2λ) @632nm
Wavefront Distortion<(2-4)λ @632nm
Surface Quality80/50
Parallel10’
Perpendicular60’
Clear Aperture>90%
Chamfer<0.2×45°
                                                            Polishing Specification for Optical Grade II
Orientation Tolerence< 0.5°
Thickness/Diameter Tolerance±0.10 mm
Surface Flatness<(λ/2-λ/4) @632nm
Wavefront Distortion<(1-2)λ @632nm
Surface Quality60/40
Parallel1’
Perpendicular60’
Clear Aperture>90%
Chamfer<0.2×45°
                                                            Polishing Specification for Optical Grade III
Orientation Tolerence< 0.2°
Thickness/Diameter Tolerance±0.02 mm
Surface Flatness<(λ/4-λ/6) @632nm
Wavefront Distortion<(λ-λ/2) @632nm
Surface Quality40/20
Parallel45’
Perpendicular20’
Clear Aperture>90%
Chamfer<0.2×45°

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μmNo
0.106
1.9130
0.1211.6240
0.1501.5030
0.1801.4850
0.2201.4291
0.2701.4141
0.3301.4087
0.3601.4048
0.6001.4019
0.9001.3918
2.0001.3880
3.5001.3788
5.000
1.3587


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History: 

Metalaser has engaged in crystal industry over 20 years which is one section    of Shanghai Daheng Optics and Fine Mechanics Co., Ltd held by SIOM. 

Team:     

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More than 60% of our employees are physics or material scientists from NIALT and SIOM.





》More information about our company

Alibaba Transaction History:

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We have set up a mall on the Alibaba, and there are many transaction record from all over the world.    

》Our Alibaba trade website

           

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Delivery in 3~4weeks

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Free samples can be provided

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Free ex change goods or sales return for once 

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Provides re-polished and coating

services (Coating damage only)

Note:Postage paid by the buyer

》More information about Service


With Optical Crystals for sale, it is one of the leading manufacturers and supplies of good lif optical crystals, welcome to buy and wholesale products at good price from our factory.

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