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| Categories | Sapphire Optical Windows |
|---|---|
| Brand Name: | ZMSH |
| Model Number: | Sapphire crystal boule |
| Certification: | rohs |
| Place of Origin: | CHINA |
| Price: | by case |
| Payment Terms: | T/T |
| Delivery Time: | 2-4weeks |
| Materials:: | Monocrystalline Sapphire |
| Refractive Index:: | N0 = 1.768(633nm),ne = 1.760(633nm) |
| Melting Point:: | 2050°C |
| Hardness:: | Mohs Hardness 9.0 |
| Density:: | 3.98 G/cm³ |
| Colour:: | Transparent |
| Company Info. |
| SHANGHAI FAMOUS TRADE CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
Sapphire Crystal Boule (Sapphire crystal material) is a synthetic
single crystal alumina (α-Al₂O₃), It is usually grown by
Czochralski (CZ) or Heat exchange Method (HEM). Because of its
extremely high hardness (Mohs hardness 9, second only to diamond),
excellent light transmission (ultraviolet to infrared band) and
excellent chemical stability, sapphire is widely used in high-end
optics, semiconductors, consumer electronics and industrial fields.
Sapphire Crystal Boule is a key material in semiconductor, optics, consumer electronics and other fields due to its ultra-high hardness, wide band light transmission and extreme environmental resistance. We offer full process solutions from crystal growth to precision machining to meet the needs of high-end applications.
Crystal structure | Monocrystalline sapphire |
Refractive index | n0 = 1.768(633nm),ne = 1.760(633nm) |
| Hardness | Mohs hardness 9.0 |
| Transparency | Fully transparent |
Density | 3.98 g/cm³ |
Common sizes | 2-12 inches diameter |
1. Optical performance:
· Wide transmittance range (0.15~5.5μm), covering deep ultraviolet (DUV) to mid-infrared (MIR) bands.
· Refractive index 1.76@589nm, low birefringence (0.008), suitable for optical window and lens applications.
· Anti-reflection film (AR), high reflection film (HR) or filter film can be plated to optimize the transmittance of specific bands.
2. Mechanical properties:
· Mohs hardness 9, excellent scratch resistance, suitable for wear-resistant applications.
· Compressive strength >2GPa, bending strength >400MPa, strong impact resistance.
· It can be processed into Wafer, optical window, guide wheel, bearing and other forms.
3. Thermal properties:
· Melting point up to 2050℃, long-term working temperature up to 1900℃ (inert gas environment).
· Thermal conductivity 35W/(m·K), coefficient of thermal expansion 5.8×10⁻⁶/K (25~1000℃), heat shock resistance.
4. Chemical stability:
· Acid and alkali resistance (except hydrofluoric acid and hot concentrated sulfuric acid), strong oxidation resistance.
· Anti-radiation, suitable for extreme environment such as nuclear industry and aerospace.
(1) Semiconductor industry
· LED epitaxial substrate: Used for GAN-based LED and Micro LED
epitaxial growth, providing a single crystal substrate with low
defect density.
· Semiconductor device window: as an observation window of etching machine and PECVD equipment, resistant to plasma corrosion.
· Wafer transfer guide wheel: used for wafer handling to avoid metal contamination.
(2) Optical and laser fields
· Optical window: Output window for high power lasers (CO₂ laser,
fiber laser), resistant to laser damage (LIDT>10J/cm²@1064nm).
· Infrared optical element: infrared window for missile seeker and thermal imaging system.
· Ultraviolet optics: light transmission components for DUV lithography machines and UV laser systems.
(3) Consumer electronics
· Smart phone/Watch cover: Apple Watch, high-end mobile phone
camera protection lens, anti-scratch.
· AR/VR optical lens: high light transmission, wear resistance, improve optical performance.
(4) Industrial and special applications
· Precision bearings: for high speed, corrosion resistant
environments (such as medical equipment, clocks).
· High pressure observation window: pressure withstand window of deep sea detector and oil drilling equipment (>100MPa).
· Space and nuclear industry: radiation resistance Windows for satellite optical payloads and nuclear reactor monitoring equipment.
ZMSH provides custom growing (2 to 12 inches), precision machining (wafers, optical Windows, shaped parts), coating (AR/HR/ filter) and testing services for sapphire crystals (Boule) to support the needs of semiconductor, optical, consumer electronics and other industries, ensuring high permeability, low defect density and excellent environmental stability. And provide technical advice and after-sales support.
Sapphire optical windows, Sapphire optical rods, Sapphire custom optical components
1. Q: What is a sapphire crystal boule used for?
A: Sapphire crystal boules are primarily used to produce
high-performance optical components, LED substrates, and
scratch-resistant cover glass for consumer electronics.
2. Q: Why is sapphire crystal so expensive?
A: Sapphire crystal is costly due to its extreme hardness requiring
specialized cutting/polishing and high-purity growth processes like
Czochralski method.
Tag: #As grown Sapphire crystal boule, #Sapphire crystal boule,
#Optical-Grade, #Sapphire ingot, #KY, #Optical device manufacturing
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