Custcustomized polished Sapphire Crystal Dome/Hemisphere optical
sapphire crystal dome
Optical Crystal Glass Sapphire Wafer Price
Sapphire Windows are manufactured from single crystal sapphire,
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
Synthetic Sapphire is a single crystal form of corundum, Al2O3,
also known as alpha-alumina, alumina, and single crystal Al2O3.
Sapphire is aluminium oxide in the purest form with no porosity or
grain boundaries, making it theoretically dense. The combination of
favourable chemical, electrical, mechanical, optical, surface,
thermal, and durability properties make sapphire a preferred
material for high performance system and component designs. For
various semiconductor applications, sapphire is the best choice in
comparison with other synthetic single-crystals.
Sapphire substrates / wafers: EPI-polished, optically polished,
lapped or as-cut sapphire disks, windows, substrates, blanks as
well as epitaxial structures “silicon-on-sapphire” (SOS) are
described at the next page,
Main properties of sapphire:
| Chemical formula | Al2O3 |
| Crystal class | Hexagonal system, rhomboidal class 3m |
| Lattice constants, A | a=4.785, c=12.991 |
| Density, g/cm3 | 3.98 |
| Melting point, °K | 2303 |
| Hardness | Knoop(daN/mm2): 1800 parallel to C-axis, 2200 perpendicular to C-axis, Mohs: 9 |
| Optical transmission range, µm | 0.17 - 5.5 |
| Refractive index at 0.532 µm | n0=1.7717, ne=1.76355 |
| Water absorption | nil |
| Young Modulus, Gpa | 345 |
| Shear Modulus, Gpa | 145 |
| Bulk Modulus, Gpa | 240 |
| Bending Modulus (Modulus of Rupture), Mpa | 420 at 20°C, 280 at 500°C |
| |
· Sapphire is used in analytical applications where combinations of
high temperature, pressure, and hydrofluoric acid species are
encountered. These applications need the survivability of sapphire,
while often needing other properties such as favourable UV
(ultraviolet) or IR (infrared) transmission.
· NMR (Nuclear Magnetic Resonance) tubes; Sapphire is used for very
high-pressure applications in replacement of glass or quartz tubes.
· Sample preparation - sapphire is used in digestion cells as
sheaths and liners. When hydrofluoric acid is used, sapphire
replaces quartz components
· Analytical chemistry - for mass spectroscopy, ICAP, and other
systems, sapphire replaces quartware to improve durability and
reduce contamination while offering good UV transmission.
Medical applications:
· Sapphire is used in surgical systems for laser transmission and
in contact with bodily fluids.
· Surgical tips - sapphire is used in contact tips for various
surgical laser applications
· Endoscope lenses - sapphire is often used in endoscope lenses due
to its durability in contact with tissues and in sterilisation
environments such as autoclaving
· Sapphire knives - with a sapphire knife, thinner sections are
possible. The near perfect cutting edge of this knife / blade gives
distortion-free sections down to 10 microns thick.
Optical applications:
· Sapphire is used for short and long wavelength applications (UV
and IR) beyond the range where conventional optics performs
adequately. High temperatures and hostile environments also
necessitate the use of sapphire optics.
· Illumination windows - for very high brightness illumination,
sapphire windows survive the very high heat while providing the
broadest spectral transmission.
IF you have any questions, please feel free to contact us !
Q: How long is your delivery time?
A: Generally , it is 10-25 days. It depends on the quantity.
Q: What kind of service you can offer?
A:Technical support; free packing; After- sales service
Q: Do you have any stock of sapphire products?
We process sapphire product according to customer requirement, so
we only have few sapphire samples in stock.
Our Service
Customized order:
Produce according to specific requirements and drawings, and also
can design products for customers
1.Any inquiries will be replied within 24 hours.
2.Professional manufactory for 5 years.
3.All products will have been strictly Quality Checked in house
before packing.
4.All products will be well packed before shipping.
5.Trigon Optics provides technical assistance as the customers
requirement and needs.
