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Low-stress magnesium fluoride (MgF₂) is a high-purity optical material optimized for minimal internal stress, superior ultraviolet and infrared transmission, and strong thermal stability. Manufactured with advanced processing techniques, it provides enhanced durability, reduced birefringence, and excellent environmental resistance. This specialized MgF₂ variant is widely used in laser optics, spectroscopy, semiconductor lithography, and precision scientific instrumentation, ensuring reliable optical performance with minimal distortion.
Product Overview:
Low-stress magnesium fluoride is a crystal material known for its excellent optical and mechanical properties, widely used in high-precision fields such as optics, electronics, and lasers. This material features high transparency, low absorption, and a relatively low refractive index, making it ideal for optical components like lenses, windows, and prisms. Low-stress magnesium fluoride also offers superior chemical stability, allowing it to maintain stable performance under high-energy laser beams and extreme environmental conditions. This makes it an ideal choice for use in lasers, infrared optical systems, and high-precision telescopes.
Key Features:
- High Transparency:Provides exceptional light transmission, ensuring high efficiency in optical systems.
- Low Absorption:Reduces optical energy loss, enhancing system stability and performance.
- Lower Refractive Index:Pairs well with high refractive index materials, making it suitable for photonic crystals and wide bandgap applications.
- High Mechanical Strength:Offers excellent mechanical properties, ideal for applications involving high-energy density laser beams.
- Strong Chemical Stability:Maintains stable performance in harsh environments, such as high temperatures and intense light conditions.
- High Purity & Low Impurities:Important for applications in optics and electronics, where material purity is critical.
Applications:
- Optical Component Manufacturing:Used in the production of various optical components, such as lenses, windows, prisms, and more.
- Lasers:Serves as a key optical component in high-power laser systems, capable of withstanding high-energy laser beams.
- Infrared Optical Systems:Ideal for optical components requiring high infrared transmission.
- High-Precision Telescopes:Widely used in precision optical instruments like telescopes.
- Photonic Crystals & Electronics:Suitable for use in photonic crystals as a foundational optical material, and finds applications in semiconductor manufacturing.
| Optical Property | Value |
| Transmission Range | 0.12-9 μm |
| Transmittance | >90%@0.193-6μm |
| Refractive Index | NO=1.566, Ne=1.568@0.13μm |
| NO=1.334, Ne=1.343@5μm | |
| Reflection Loss | 11.2%@0.12μm (both surfaces) |
| 5.7%@0.22μm (both surfaces) | |
| 5.1%@1μm (both surfaces) | |
| Absorption Coefficient | 40×10⁻³@2.7μm |
| Structure | Square Crystal System |
| Cleavage Planes | <100 |
| Physical Property | Value |
| Density | 3.177 g/cm³ |
| Melting Point | 1255 ℃ |
| Thermal Conductivity | 21 W/(m·K) //c, 33.6⊥c @ 300K |
| Thermal Expansion | 13.7×10⁻⁶/K //c, 8.9×10⁻⁶/K ⊥c @ 373K |
| Knoop Hardness | 415 kg/mm² |
| Specific Heat Capacity | 1003 J/(kg·K) |
| Dielectric Constant | 4.87 //c, 5.44⊥c @ 1MHz |
| Young's Modulus | 138.5 GPa |
| Shear Modulus | 54.66 GPa |
| Bulk Modulus | 101.32 GPa |
| Poisson's Coefficient | 0.276 |
| Chemical Property | Value |
| Solubility | 0.002 g/L @ 20℃ |
| Molecular Weight | 62.3018 g/mol |
| Property | Value |
| Material Name | Low Stress MgF₂ |
| Available Size | 3-200mm |
| Material Grade | VIR, UV, DUV, VUV |
| Transmittance Range | 0.12-7.5μm |
| Crystal Structure | Monocrystalline |
| Orientation | <001>, <100>, <110>, <210> |
| Blank Shape | Round, rectangular, wedge, lens, step drilled, special-shaped |
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