Infrared Optics
Material Blanks
Material blanks
GeblanksSPEC
GeDisks
Diameter
..
Description
Material blanks
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Ge blanks SPEC
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Ge Disks
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Diameter
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5-360 mm (mono)
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5-400 mm（poly)
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Diameter Tolerance
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≤0.025 mm
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Min Thickness
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0.3 mm
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Max Thickness
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75 mm
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Thickness Tolerance
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≤0.025 mm
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Ge Lenses
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Diameter
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7-330 mm (mono)
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7-350 mm（poly)
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Diameter Tolerance
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≤0.03 mm
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Min Thickness
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ΔSag < 0.005
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Max Thickness
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≤0.025 mm
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Thickness Tolerance
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≤0.03 mm
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Ge Rectangular
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Max Size
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350 mm
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Min Thickness
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0.1 mm
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Thickness Tolerance
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0.02 mm
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Products-Si Mono (Disks/Rectangular/Lenses)
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Si blanks SPEC
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Si Disks
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Diameter
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5-300 mm (mono)
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5-300 mm（poly)
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Diameter Tolerance
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≤0.025 mm
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Min Thickness
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0.3 mm
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Max Thickness
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75 mm
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Thickness Tolerance
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≤0.025 mm
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Si Lenses
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Diameter
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7-300 mm (mono)
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7-300 mm（poly)
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Diameter Tolerance
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≤0.03 mm
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Min Thickness
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ΔSag < 0.005
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Max Thickness
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≤0.025 mm
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Thickness Tolerance
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≤0.03 mm
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Si Rectangular
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Max Size
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250 mm
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Min Thickness
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0.1 mm
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Thickness Tolerance
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0.02 mm
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ZnSe
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Product Specifications
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Size
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300 mm * 600 mm
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Thickness
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55 mm
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For dome
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Dia 250*20 mm
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Surface quality
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3(0.5)
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Physical Properties
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Grain size/um
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<100
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Density g/ m³
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5.27g
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Chemical Purity %
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≥99.999
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Transmissive Wavelength/um
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0.5-20
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Thermal Properties
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Thermal conductivity W/mK
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@296K
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18
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Coefficient of Thermal Expansion/K
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@223k-473k
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7.1*10(-6)
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Specific Heat Capacity, J/Gk
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339
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Optical Properties
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Refractive index
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@10um
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2.4028
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Index of Absorption /cm
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@10.6um
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<0.0005
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Mechanical Properties
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Knoop hardness kg/ mm²
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120
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Poisson’s Ratio
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0.28
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Young’s Modulus, Gpa
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67.2
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Flexural Strength, Mpa
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56
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ZnS
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Product Specifications
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Size
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300 mm * 600 mm
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Thickness
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35 mm
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For dome
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Dia 300*15 mm
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Surface quality
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3(0.5)
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Physical Properties
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Grain size/um
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<100
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Density g/ m³
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4.09g
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Chemical Purity %
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≥99.999
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Transmissive Wavelength/um
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0.4-12
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Thermal Properties
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Thermal conductivity W/mK
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@296K
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16.7
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Coefficient of Thermal Expansion/K
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@223k-473k
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6.6*10(-6)
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Specific Heat Capacity, J/Gk
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Optical Properties
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Refractive index
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@10um
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2.2518
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Index of Absorption /cm
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@10.6um
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<0.2
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Mechanical Properties
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Knoop hardness kg/ mm²
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200-230
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Poisson’s Ratio
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0.29
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Young’s Modulus, Gpa
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88
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Flexural Strength, Mpa
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100
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CaF2
Calcium Fluoride crystal shows good optical and thermo-mechanical properties, can be used for optical windows, lenses, prisms within a wide range from 130nm to 9μm. It has optical properties of isotropy, low absorption and low refractive index, which made CaF2 gain the unique advantages in the application of high power lasers.
We are able to offer
CaF2 IR viewport Windows for Infrared Thermography at 8μm to 10μm
Various optics for IR & VUV application, using our CaF2 crystal materials
Good quality CaF2 crystal blank materials
OEM service for good quality CaF2 crystals
Orientation：<100>、<110>、 <111>
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Optical Properties
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Transmission Range
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130 nm to 10 μm
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Transmittance
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>94% at 193 nm to 7.8 μm
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Refractive Index
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1.39908 at 5 μm
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Reflection Loss
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5.4% at 5 μm (both surfaces)
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Absorption Coefficient
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0.03 cm-1 at 2.6 μm to 2.9 μm
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dn/dT
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-10.6 x 10-6 /℃
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Physical Properties
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Density
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3.18 g/cm3
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Melting Point
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1360℃
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Thermal Conductivity
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9.71 Wm-1K-1 at 286K
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Thermal Expansion
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18.85 x 10-6 /℃ at 273K
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Knoop Hardness
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158.3 with 100g indenter (kg/mm2)
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Specific Heat Capacity
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854 J/(kg.k)
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Dielectric Constant
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6.76 at 1MHz
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Youngs Modulus (E)
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75.80 GPa
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Shear Modulus (G)
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33.77 GPa
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Bulk Modulus (K)
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82.71 GPa
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Elastic Coefficient
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C11=164; C12=53; C44=33.7
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Apparent Elastic Limit
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36.54 MPa (3900 psi)
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Poisson Ratio
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0.26
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Chemical Properties
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Solubility
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0.0017 g/ 100g water at 20℃
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Molecular Weight
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78.08
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Structure
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Cubic Crystal
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Cleavage Plane
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(111)
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MgF2
Magnesium Fluoride crystal is used as a lens, prism and window for wavelength from 110nm to 7.5μm. It is a most suitable material as window for ArF Excimer Laser, for the reason of its good transmission at 193nm. It is also effective as an, optical polarizing element in the ultraviolet region. Any more MgF2 crystal has fine grain, which is appropriate as a vacuum evaporation coating materials.
We are able to offer
Various optics for IR & VUV application, using our MgF2 crystal materials
MgF2 VUV Windows for ArF Excimer Laser
Good quality MgF2 crystal blank materials
OEM service for good quality MgF2 crystals
Orientation：<001>、<100>、<110>、<210>、<111>
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Optical Properties
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Transmission Range
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110 nm to 7.5 μm
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Transmittance
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>90% at 193 nm to 6 μm
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Refractive Index
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No=1.37608; Ne=1.38771 (at 0.7μm)
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Reflection Loss
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5.2% at 0.6 μm (both surfaces)
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Residual Radiation Peak
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20 nm
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Absorption Coefficient
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0.04 cm-1 at 2.7 μm
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dn/dT
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2.3 x 10-6 /℃ parallel c-axis
1.7 x 10-6 /℃ perpendicular c-axis
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Physical Properties
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Density
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3.18 g/cm3
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Melting Point
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1255℃
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Thermal Conductivity
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0.3 Wm-1K-1 at 300K
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Thermal Expansion
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13.7 x 10-6 /℃ parallel c-axis
8.9 x 10-6 /℃ perpendicular c-axis
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Knoop Hardness
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415 with 100g indenter (kg/mm2)
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Specific Heat Capacity
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1003 J/(kg.k)
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Dielectric Constant
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1.87 at 1MHz parallel c-axis
1.45 at 1MHz perpendicular c-axis
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Youngs Modulus (E)
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138.5 GPa
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Shear Modulus (G)
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54.66 GPa
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Bulk Modulus (K)
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101.32 GPa
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Elastic Coefficient
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C11=164; C12=53; C44=33.7
C13=63; C66=96
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Apparent Elastic Limit
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49.6 MPa (7200 psi)
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Poisson Ratio
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0.276
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Chemical Properties
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Solubility
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0.0002 g/ 100g water at 20℃
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Molecular Weight
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62.32
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Structure
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Tetragonal Crystal
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Cleavage Plane
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(110)
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BaF2
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Optical Properties
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Transmission Range
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150 nm to 14 μm
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Transmittance
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>94% at 350 nm to 10.8 μm
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Refractive Index
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1.4624 at 2.58 μm
1.3936 at 10.35 μm
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Reflection Loss
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6.8% at 2.58 μm (both surfaces)
5.3% at 10.35 μm (both surfaces)
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Radiation Length
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20.6 mm
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Residual Radiation Peak
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47 nm
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Emission Peak
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310 nm slow; 220 nm fast
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Decay Constant
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620 ns slow; 0.6 ns fast
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Light Output
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20% slow; 4% fast
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Absorption Coefficient
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3.2 x 10-4 cm-1 at 6 μm
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dn/dT
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-15.2 x 10-6 /℃
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Physical Properties
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Density
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4.89 g/cm3
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Melting Point
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1280℃
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Thermal Conductivity
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11.72 Wm-1K-1 at 286K
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Thermal Expansion
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18.1 x 10-6 /℃ at 273K
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Knoop Hardness
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82 with 500g indenter (kg/mm2)
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Specific Heat Capacity
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410J/(kg.k)
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Dielectric Constant
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7.33 at 1MHz
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Youngs Modulus (E)
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53.07 GPa
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Shear Modulus (G)
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25.4 GPa
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Bulk Modulus (K)
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56.4 GPa
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Elastic Coefficient
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Elastic CoefficientElastic Coefficient
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Apparent Elastic Limit
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26.9 MPa (3900 psi)
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Poisson Ratio
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0.343
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Chemical Properties
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Solubility
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0.0017 g/ 100g water at 23℃
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Molecular Weight
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175.36
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Structure
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Cubic Crystal
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Cleavage Plane
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(111)
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