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| Crystals |
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Tel:+86-(0)591-87846955
+86-(0)591-87846952
Fax: +86-(0)591-87856157
Address:NO. 67, YangQi Road, JinShan FuWan Industrial Park, Fuzhou, FuJian, 350026, China
E-mail: sales@phosctech.com
Website: www.phosctech.com |
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 Sapphire Crystal |
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Physical Properties:
Density: 3.98 g/cm3, (0.143 lb/in3)
Transmission range: 180nm-4500nm
Thermal expansion coefficient:8.4×10-6/K
Molecular Weight: 101.96
Hardness: Knoop microindenter: 2200 (perpendicular to c-axis), 1800 (parallel to c-axis)
Young's Modulus: 3.6 x 104 to 4.4 x 104 daN/mm2
Tensile Strength: 300 to 400 MPa
Point Group; Symmetry:3 2/m; [C,1A3, 3A2, 3P]
Lattice Dimensions: a = 4.748 Angstroms, c = 12.957 Angstroms
Sound Speed: ~10 km/s
Optical Properties:
Refractive Indices:
Ordinary Ray (N0) (parallel to C-axis): 1.768
Extraordinary Ray (Ne) (perpendicular to C-axis): 1.760
Birefringence (Ne - N0): 0.008
Temperature Coefficient of Refractive Index: 13x10-6/℃ (@ 0.57 μm, 20℃)
Transmittance: >85% 0.3-4.0 μm (@ 0.1 mm thick) uncorrected
Emissivity @ 3,4,5 μm: 16%, 25%, 70% (@500℃)
Absorption @ 0.66 mm @ 1600℃: 0.1 - 0.2 cm-1
Optical Grade sapphire windows
Sapphire crystal retains its high strength at high temperatures, has good thermal properties and excellent transparency. Sapphire is aniso- tropic hexagonal crystal. The single crystal Sapphire is highly trusted material with its excellent chemical stability, mechanical property, and light transmission.
Capability:
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Attribute
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Commercial
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High Precision
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Material :
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Optical Grade Single Crystal Sapphire
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Orientation :
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Random, C-axis , A-plane , R-plane and M-plane
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Typical Diameterφ(mm)
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4, 8, 12.7, 25.4, 30, 38, 50, 60
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Typical Thickness(mm)
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0.5, 1, 2, 3, 5, 10, 15, 20
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Diameter Tolerance
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± 0.1mm
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± 0.02mm
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Thickness Tolerance
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± 0.1mm
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± 0.02mm
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Surface Quality
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60-40 scratch and dig
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20-10 scratch and dig
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Parallelism
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＜3 arc minutes
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＜5 arc second
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Bevel :
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＜0.25mm×45°
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＜0.25mm×45°
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Note:Other sizes and coatings are available upon request.
IR and UV Quality sapphire windows
Sapphire crystal is extremely hard and scratch resistant useful for the visible and IR spectrum. It has excellent thermal conductivity at low temper-atures allowing sapphire to be used in many diverse fields requiring thermal conduction and heat radiation. Sapphire has high dielectric constant and is resistant to common chemical acids and alkaline. Optical sapphire has no colouration and with a selection of grades of sapphire transmission ranging from 180nm to 5 microns. Window shall not brown when subjected to UV Light.
Capability:
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Attribute
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Commercial
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High Precision
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Material
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IR/UV Grade Single Crystal Sapphire
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Orientation
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Random, C-axis , A-plane , R-plane and M-plane
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Typical Diameterφ(mm)
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4, 8, 12.7, 25.4, 30, 38, 50, 60
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Typical Thickness(mm)
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0.5, 1, 2, 3, 5, 10, 15, 20
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Diameter Tolerance
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± 0.1mm
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± 0.02mm
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Thickness Tolerance
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± 0.1mm
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± 0.02mm
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Surface Quality
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80-50 scratch and dig
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40-20 scratch and dig
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Parallelism
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＜3 arc minutes
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＜30 arc second
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Bevel
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＜0.25mm×45°
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＜0.25mm×45°
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Note:Other sizes and coatings are available upon request.
Sapphire Prisms
There are many types of prisms, each having a particular geometry, used to achieve the reflections required to perform a specific imaging task. Refl-ecting prisms may invert, rotate, deviate or displace a beam. Dispersing prisms produce spectral separation for spectroscopic applications or tuning a laser output. The sapphire prisms are applied a lot to laser technology, optic-fiber communication, photoelectric transmission and image techno-logy .etc.
We can manufacture many types of high precision sapphire prisms, including right angle prism, penta prism, wedge prism, corner cube and custom shape prism . etc.
Capability:
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Attribute
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Commercial
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High Precision
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Material
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Single Crystal Sapphire
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Dimension Available
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5mm～50mm
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5mm～50mm
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Thickness Available
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0.5mm～20mm
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0.5mm～20mm
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Diameter Tolerance
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± 0.2mm
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± 0.02mm
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Thickness Tolerance
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± 0.2mm
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± 0.02mm
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Surface Quality
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80-50 scratch and dig
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40-20 scratch and dig
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Deviation Tolerance
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＜5 arc minutes
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＜15 arc second
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Bevel
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＜0.25mm×45°
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＜0.25mm×45°
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Sapphire Scanner windows
Specifications:
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Material :
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Single Crystal Sapphire and EFG Growth
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Width :
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2 inch - 4 inch
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Length :
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2 inch - 8 inch
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Thickness :
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0.7mm - 5mm
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Tolerance :
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±0.01mm - ±0.2mm
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Orientation :
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Random, C-axis , A-plane , R-plane and M-plane
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Surface Quality :
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80-50 or 60-40 Scatch-dig
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Bevel :
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<0.25mm×45°
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Sapphire Ribbons
Specifications:
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Material :
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Single Crystal Sapphire and EFG Growth
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Width :
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<4 inch
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Length :
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<7 inch
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Thickness :
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0.7mm - 8mm
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Tolerance :
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±0.01mm - ±0.2mm
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Orientation :
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Random, C-axis , A-plane , R-plane and M-plane
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Surface Quality :
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80-50 or 60-40 Scatch-dig
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Bevel :
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<0.25mm×45°
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Sapphire Tubes and Rods
We can provides sapphire tubes and rods in various specification in accordance with customers request.
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Sapphire Tubes
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Material :
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Single Crystal Sapphire and EFG Growth
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Outside Diameter :
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<52mm
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Inside Diameter :
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>0.1mm
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Lengths :
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<200mm
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Tolerances :
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>±0.01mm
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Plumb Degree :
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<10 arc minutes
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Concentricity Tolerances :
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±0.01mm - ±0.2mm
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Surface Finish :
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Ra 0.05μm to 1.0 μm, Fine ground
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Sapphire Rods
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Material :
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Single Crystal Sapphire and EFG Growth
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Diameter :
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<26mm
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Lengths :
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<200mm
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Tolerances :
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>±0.01mm
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Plumb Degree :
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<10 arc minutes
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Ellipse Degree :
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<5μm
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Surface Finish :
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Ra 0.05μm to 1.0 μm, Fine ground
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Sapphire wafer
The Sapphire wafer are utilized for various electronic and optical parts. Products such as Semiconductor Wafer Carriers; Electrical Insulators; Thin Film Deposition; Transparent Electronic Substrate; Silicon on Sapphire Wafers; Superconductor Substrate.etc.
Specifications:
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Material :
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Optical Grade Single Crystal Sapphire
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Orientation :
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Random, C-axis , A-plane , R-plane and M-plane
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Diameter :
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1″,2″,3″and 4″
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Thickness :
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0.15mm, 0.33mm, 0.43mm, 0.50mm
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Tolerance :
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±0.01mm - ±0.2mm
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Surface Finish :
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Epi-polished, Ra<0.3nm
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