Optical Crystal Calcium Fluoride CaF2 Crystal

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Specifications

Type Of Crystal: calcium fluoride(CaF2)
Crystal Diameter: 520mm
Material Grade: UM-DUV, UM-UV, UM-IR
Wavelength Range: 0.13-10μm
Crystal Structure: Monocrystalline/Polycrystalline
Orientation: <111>,<110>,<100>
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Features

  • Ultra-High Purity & Homogeneity: In-house growth enables strict control over raw material quality, achieving ≥99.99999% purity with minimal impurities . This ensures uniform optical properties across the entire crystal, avoiding beam distortion in high-precision applications
  • Broad Spectral Transmittance: Excellent transparency from deep UV to mid-IR , with zero intrinsic birefringence—ideal for multi-spectral optical systems requiring consistent light transmission
  • Superior Thermal Stability: Low thermal expansion coefficient (1.89×10⁻⁶/°C) and high melting point (1418°C), resisting thermal shock and deformation even in extreme temperature fluctuations (-50°C to 300°C)
  • High Laser Damage Threshold (LIDT): Minimal optical absorption, especially in UV and visible ranges, providing LIDT ≥15 J/cm² (1064 nm, 10 ns pulses) for unprocessed crystals. Suitable for high-power excimer lasers (193 nm/248 nm) and DUV lithography systems
  • Chemical Inertness & Durability: Non-hygroscopic (no moisture absorption) and resistant to most acids (except strong alkalis), ensuring long-term stability in harsh laboratory, industrial, and space environments.\

Applications

  • Optical Component Fabrication: Core raw material for manufacturing CaF₂ windows, lens, prisms, and beamsplitters used in UV-IR optical systems
  • Semiconductor Lithography: Critical for DUV lithography tools (193 nm excimer lasers) to produce advanced microchips, leveraging high transmittance and low birefringence
  • Scientific Research: Applied in synchrotron radiation experiments, vacuum UV spectroscopy, high-energy physics detectors, and laser fusion research requiring ultra-pure optical materials
  • Aerospace & Defense: Used in space-based IR telescopes, missile guidance systems, and satellite optical sensors—withstanding extreme vacuum, temperature, and radiation conditions
  • Medical & Industrial Lasers: Raw material for optical components in UV laser surgery tools, laser micromachining equipment, and FTIR spectrometers