new material
Large-size calcium fluoride (CaF₂) is a high-performance optical material known for its exceptional ultraviolet and infrared transmission, low dispersion, and strong resistance to thermal and environmental degradation. Manufactured from high-purity CaF₂, it provides superior optical clarity, excellent durability, and precise wavelength control, making it an essential material for laser optics, spectroscopy, semiconductor lithography, and scientific instrumentation.
Product Overview:
Large Size Calcium Fluoride is a high-performance material with excellent optical properties and stability, widely used in high-end optical systems that require high transparency, high-temperature resistance, and UV protection. It exhibits superior transmission in both visible and infrared light, making it particularly suitable for the manufacture of optical windows, lenses, and precision optical components. The large-size specifications of CaF₂ can meet various specific requirements and play a crucial role in laser technology, optical communication, and high-precision optical instruments.
Key Features:
- High Transparency and Low Light Energy Loss:Calcium fluoride provides excellent transmission in both visible and infrared ranges, ensuring minimal energy loss and high-quality imaging.
- High Refractive Index and Low Scatter:The crystal structure of CaF₂ is cubic, offering a high refractive index and low scattering, ensuring precise optical control in optical elements.
- UV Protection:Exhibits excellent UV resistance, making it suitable for high-intensity light environments.
- High Thermal Resistance and Chemical Stability:With excellent thermal stability and resistance to chemical corrosion, it can perform reliably in extreme conditions.
- Exceptional Mechanical Properties:It retains high mechanical strength and optical performance even under harsh conditions such as high temperatures and intense light.
Applications:
- Optical Instruments:Widely used in the production of precision optical lenses, prisms, windows, and other optical components due to its high transparency.
- Laser Technology:In laser systems, calcium fluoride serves as a high-precision optical material, ensuring efficient beam transmission and stability.
- Optical Communication:Used in optical communication systems to ensure stable signal transmission and minimize energy loss.
- Telescopes:As a high-refractive-index material, it is widely used in telescope optical systems to improve imaging quality.
| 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 | Large Size CaF₂ |
| Available Size | 3-420mm |
| Material Grade | VIS-IR, UV, VUV, Excimer Laser |
| Transmittance Range | 0.13-10μm |
| Crystal Structure | Monocrystalline, Polycrystalline |
| Orientation | <111>, <110>, <100>, <001>, <220> |
| Blank Shape | Round, rectangular, wedge, lens, step drilled, special-shaped |
