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UV vacuum grade calcium fluoride (CaF₂) is a high-purity optical material specifically designed for extreme ultraviolet transmission and high vacuum environments. Engineered with exceptional clarity and minimal optical distortion, it offers superior resistance to thermal and environmental degradation. With optimized crystalline structure and low outgassing properties, this specialized CaF₂ is widely used in vacuum-compatible optics, semiconductor lithography, laser systems, and precision scientific instrumentation, ensuring reliable optical performance under demanding conditions.
Product Overview:
UV Vacuum Grade Calcium Fluoride is a high-performance optical material specifically designed for ultraviolet (130nm-200nm) spectral analysis and transmission in vacuum ultraviolet (VUV) applications. It boasts exceptional transparency and a wide transmission range, allowing it to effectively transmit visible, near-ultraviolet, and far-ultraviolet light. This material is extensively used in high-precision optical systems for laser applications, spectral analysis, and vacuum technologies.
Key Features:
- High Transparency and Wide Transmission Range:Offers excellent transparency across the visible, near-ultraviolet, and far-ultraviolet spectra, making it ideal for various high-precision optical applications.
- Low Birefringence and Low Dispersion:Low birefringence and dispersion help maintain the precision and stability of optical systems during light transmission.
- High Thermal Conductivity and Laser Damage Threshold:Excellent thermal conductivity and resistance to laser damage, making it suitable for use in high-power laser systems.
- Strong Chemical Stability:Retains stable performance in high-temperature and chemically corrosive environments, ensuring reliable operation in harsh conditions.
- Exceptional Refractive Index:Provides efficient light transmission across a wide wavelength range, improving the stability and accuracy of optical systems.
Applications:
- Vacuum Ultraviolet Transmission and Spectral Analysis:Widely used in vacuum ultraviolet spectroscopy instruments and optical transmission systems in vacuum environments.
- High-Power Laser Systems:Serves as an optical component in high-power laser systems, ensuring excellent laser transmission and system stability.
- Optical Instruments and Lenses:Used in the manufacturing of high-precision optical lenses, prisms, and windows for precision optical instruments.
- Laser and Optical Transmission Systems:Provides high-precision light transmission and imaging capabilities in laser technology, optical communication, and other optical systems.
| Optical Property | Value |
| Transmission Range | 0.13-10 μm |
| Transmittance | >94%@193nm-7.87μm |
| Refractive Index | 1.4288@2.5μm, 1.39908@5μm |
| Reflection Loss | 5.4%@5μm (both surfaces) |
| Absorption Coefficient | 7.8×10⁻⁴@2.7μm |
| Structure | Cubic Crystal System |
| Cleavage Planes | <111 |
| Physical Property | Value |
| Density | 3.18 g/cm³ |
| Melting Point | 1420 ℃ |
| Thermal Conductivity | 9.71 W/(m·K) @ 293K |
| Thermal Expansion | 18.5×10⁻⁶/K @ 273K |
| Knoop Hardness | 158.3 kg/mm² |
| Specific Heat Capacity | 854 J/(kg·K) |
| Dielectric Constant | 6.76 @ 1 MHz |
| Young's Modulus | 75.8 GPa |
| Shear Modulus | 33.77 GPa |
| Bulk Modulus | 82.71 GPa |
| Poisson's Coefficient | 0.26 |
| Chemical Property | Value |
| Solubility | 0.016 g/L @ 20℃ |
| Molecular Weight | 78.0748 g/mol |
| Property | Value |
| Material Name | VUV Grade CaF₂ |
| Available Size | 3-420mm |
| Material Grade | VUV |
| Transmittance Range | 130-200nm |
| Crystal Structure | Monocrystalline, Polycrystalline |
| Orientation | <111>, <110>, <100>, <001>, <220> |
| Blank Shape | Round, rectangular, wedge, lens, step drilled, special-shaped |
