|
[China]
Trade Verify
Address: Rm5-616,No.851,Dianshanhu avenue, Qingpu area，Shanghai city，CHINA
Contact name:Wang
SHANGHAI FAMOUS TRADE CO.,LTD |
|
Verified Suppliers
|
|
|
sapphire optical lens, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single crystal glass lens,optical glass ingots by sapphire ,sapphire optical rods
1.Why choose the sapphire?
1 - Thinner and Stronger than Standard Glass Windows
2 - Transmits Wavelengths Ranging From UV to Mid-Infrared
3 - Features Extreme Surface Hardness and Chemical Resistance
Sapphire glass products are manufactured from single crystal 99.999％Al2O3, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm.
2.Comparison of optical window materials
Material
Properties
Applications
BK7
Transmission Range: 330-2100nm
Refractive Index: 1.5164@588nm Most popular and low cost
Visible and near IR spectrum applications
Fused Silica
Transmission Range: 185-2500nm
Low Thermal Expansion UV to IR spectrum
Refractive Index: 1.4858@308nm Coefficient:
0.54 x 10-6K Best choice for thermal
resistance
Sapphire
Transmission Range: 180-4500nm Strong
Hardness Best choice for scratch resistance
applications
Refractive Index: 1.755@1000nm
Thinner optics Wide
Transmission Range
Calcium Fluoride
Transmission Range: 170-7800nm Little
Hygroscopic Susceptibility IR laser applications
Coefficient: 18.85 x 10-6K
High Thermal
Expansion
Refractive Index: 1.399@5000nm
MgF2
Transmission Range: 120-7000nm
UV laser
applications
3.0 sample in details
Typical specifications:
| Available orientations: | C-axis [0001], R-axis [1-102], A-axis [11-20], M-axis [10-10], Random |
| Sapphire windows / blanks | dia0.5-dia400mm, ＜400x400mm
|
| Diameter / Width: | 25.0 - 250.0 mm |
| Tolerance: | Standard ± 1°, Special to ± 0.1° |
| Thickness: | Minimum 0.1, maximum 200.0 mm |
| Surface finish: | As cut, fine ground, lapped, polished s/d 80/50, 60/40, 40/20, 20/10, 10/5, according to the MIL-0-13830A |
| Ends / Edge quality: | Fine ground, 80/50 |
| "As-grown" sapphire tubes: | outer 1-200mm |
| Dimensions | Up to 200 mm inner diameter, 0,5 - 50 mm wall thickness, 300-600 mm tubes length |
| Orientation | C-axis in the length of the tube |
| Polished sapphire tubes: | Up to 200 mm inside diameter, 0,5 - 50 mm wall thickness, 10-350 mm tubes length |
| Ingots: | Diameter/Width 5-220 mm, Thickness/Length 5 – 250 mm |
| Surface quality | As-cut, Ends/Edge Quality Diamond cut |
