Square Sapphire Substrate 10×10×1mm , C-plane , DSP , High Purity Single Crystal Al₂O₃
Sapphire Substrate (DSP) Overview
The Double Side Polished Sapphire Substrate (DSP) is fabricated from high-purity (>99.99%) single crystal aluminum oxide (Al₂O₃). With both sides precision polished to atomic-level smoothness (Ra < 0.3 nm), this material offers excellent optical transparency, mechanical strength, and thermal stability. It is widely used in optical windows, laser components, semiconductor epitaxy, and scientific research applications.
Sapphire Substrate (DSP) Key Specifications
| Parameter | Specification |
|---|---|
| Material | High Purity >99.99%, Single Crystal Al₂O₃ |
| Dimension | 10 × 10 mm |
| Thickness | 1 mm (other thicknesses available upon request) |
| Orientation | C-plane (0001) to M (1-100) 0.2° ± 0.1° off |
| Lattice Parameter | a = 4.785 Å, c = 12.991 Å |
| Density | 3.98 g/cm³ |
| Thermal Expansion Coefficient | 6.66×10⁻⁶ /°C (‖C-axis), 5×10⁻⁶ /°C (⊥C-axis) |
| Dielectric Strength | 4.8×10⁵ V/cm |
| Dielectric Constant | 11.5 (‖C-axis), 9.3 (⊥C-axis) @ 1 MHz |
| Dielectric Loss Tangent | < 1×10⁻⁴ |
| Thermal Conductivity | 40 W/(m·K) at 20°C |
| Surface Quality | Double Side Polished (DSP), Ra < 0.3 nm (AFM) on both sides |
| Flatness | ≤ λ/10 @ 633 nm (typical) |
| Parallelism | < 10 arc sec |
Sapphire Substrate (DSP) Features & Advantages
-
Double-side optical polish for excellent flatness and parallelism
-
High transparency from UV to IR regions
-
Superior hardness (Mohs 9) and scratch resistance
-
Outstanding thermal and chemical stability
-
Excellent dielectric and insulating performance
-
Custom sizes and orientations available upon request
Sapphire Substrate (DSP) Applications
-
Optical windows and protective covers
-
Infrared and UV spectroscopy
-
Laser optics and photonics components
-
GaN/AlN epitaxial growth substrate
-
High-power and RF electronic devices
-
Research laboratories and semiconductor testing
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.