new material
Low stress/low delay calcium fluoride (CaF₂) is a high-purity optical material designed for minimal internal stress, reduced optical delay, and superior ultraviolet and infrared transmission. Engineered with enhanced thermal stability and environmental resistance, it provides exceptional optical clarity, high durability, and precise wavelength control for demanding optical applications. This specialized CaF₂ variant is widely used in laser systems, spectroscopy, semiconductor lithography, and high-precision scientific instrumentation, ensuring reliable optical performance with minimized distortion.
Product Overview:
Low stress and low delay calcium fluoride (CaF₂) is a high-performance optical material optimized for internal thermal and mechanical stresses. Through fine control during crystal growth, cutting, ultra-precision annealing, and processing, this material achieves better consistency and uniformity, ensuring low delay characteristics. It excels in extreme environments such as high temperatures and intense light, making it ideal for applications requiring long-distance transmission and high-precision measurements.
Key Features:
- Low Stress Characteristics:Minimal internal thermal stress and external mechanical stress ensure consistent material properties and reduce instability in optical performance.
- Low Delay Characteristics:Optimized crystal orientation reduces delay differences, making it ideal for long-distance transmission or applications where minimal delay is critical.
- High Transparency with Low Optical Loss:Excellent optical performance with high transmission, making it suitable for high-precision optical components.
- High Stability:Maintains stable performance even in extreme environments like high temperatures and strong light, ensuring long service life.
- Customizable Shapes:Supports a wide variety of shapes and sizes, tailored to meet the specific requirements of different optical components.
Applications:
- Optical Instruments:Core optical components for high-precision optical instruments, such as lenses, windows, and optical sensors.
- Telescopes:Used in telescopes and astronomical observation devices to provide high stability and low delay performance.
- Optical Communication:For long-distance transmission and high-precision signal processing in optical communication systems.
- Laser Technology:Widely used in lasers, laser systems, and related devices, offering stable optical performance.
| 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 | Low Stress CaF₂ |
| Available Size | 3-300mm |
| Material Grade | Low Stress |
| 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 |
