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| SAPPHIRE CRYSTALS [ AI2O3 ] |
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SANCTITY LASER provide large size Sapphire crystals. As the hardest of all oxide crystals, Sapphire has a combination of optical and physical properties that make it the best choice for a variety of demanding applications. Sapphire maintains its strength even at high temperatures. It has good thermal properties, excellent electrical and dielectric properties and is resistant to chemical attack. These properties encourage the use of Sapphire in aggressive environments where reliability, optical transmission and strength are required. |
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| Specification |
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 Transmission Range |
0.17 to 5.5μm |
| Refractive Index |
1.75449 [ no ] 1.74663 [ ne ] at 1.06μm |
| Reflection Loss |
14% at 1.06μm [ 2 surfaces ] |
| Absorption Coefficient |
0.3 × 10-3 cm-1 at 2.4μm |
| Restrahlen Peak |
13.5μm |
| dndT |
13.7 × 10-6 at 5.4μm |
| dn/dμ = 0 |
1.5μm |
| Density |
3.98 g/cm3 |
| Melting Point |
2040°C |
| Thermal Conductivity |
27.21 W/ [ m · K ] at 300K |
| Thermal Expansion [ parallel / perpendicular ] |
5.6 / 5.0 × 10-6/K |
| Hardness |
Knoop 2000 with 2000g indenter |
| Specific Heat Capacity |
419 J/ [ kg · K ] |
| Dielectric Constant [ parallel / perpendicular ] |
11.5 / 9.4 at 1MHz |
| Young's Modulus [ E ] |
335 GPa |
| Shear Modulus [ G ] |
148.1 GPa |
| Bulk Modulus [ K ] |
240 GPa |
| Elastic Coefficients |
| C11=496MPa C12=164MPa C13=115MPa C33=498MPa C44=148MPa |
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| Apparent Elastic Limit |
275 MPa [ 40,000 psi ] |
| Poisson Ratio |
0.25 |
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| Note: |
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| 1. |
More question and require please contact to our sales engineer. |
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| 2. |
Explain for crystal specification please click: |
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| 3. |
Download this crystal products catalogue please click: |
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| Our Promise: |
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| • 24 Hours Reply |
Reply the Email within 24hours [ work day ]. |
| • 48 Hours Reply |
Provide the Quoation list within 48hours [ work day ]. |
| • No Mini Order |
No minimum quantity per order. |
| • Fast Delivery |
Fast and Exact delivery time for products. |
| • Best Quality |
Best quality depend on best quality material, high-tech and carefully test. |
| • Safe Delivery |
Profession and multi-protection packing for safe delivery. |
| • Safe Transaction |
15Years working for develop laser products, never leave or stop. |
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