Optics Supplier, Germanium, Calcium Fluorides, IR lens
Optics Supplier, Germanium, Calcium Fluorides, IR lens
Calcium fluoride (CaF2) optical window
Calcium fluorde (CaF2) is transparent in the UV, visible, and IR regions, making it suitable for various optical applications. YREMOptics offer CaF2 windows in various shapes and sizes, including flat, plano-convex, plano-concave, or cylindrical, depending on their intended use.
Broad spectral transmission, low dispersion, chemical inertness, mechanical strength, and thermal stability make CaF2 windows indispensable in a wide range of scientific, industrial, and technological applications.
Calcium fluoride (CaF2) windows known for their excellent optical properties across a wide spectral range, particularly in the ultraviolet (UV) and infrared (IR) regions. Here is a standard examples of manufacturing in stock:
| CaF2 optical windows | ||
| Uncoated and AR-Coated Versions Available | ||
| Available | Diameter (mm) | Thickness (mm) |
| 3,5 | 1,0; 2,0; 3,0 | |
| 5,0 | ||
| 10,0 | ||
| 12,7 | ||
| 20,0 | ||
| 25,4 | ||
Applications:
CaF2 windows that we supply find applications in numerous fields, including:
- Ultraviolet (UV) Imaging: CaF2 windows are used in UV imaging systems, UV spectrometers, and UV microscopes. They offer high transmission in the UV region, enabling the detection and imaging of UV radiation.
- Infrared (IR) Spectroscopy: CaF2 windows are used in IR spectroscopic instruments, such as Fourier-transform infrared (FTIR) spectrometers. They provide high transmission in the IR region, allowing for the analysis of chemical composition based on IR absorption spectra.
- Laser Systems: CaF2 windows are used in laser systems operating in the UV and IR regions. They are employed as laser windows, beam splitters, or output couplers in UV and IR lasers, providing optical access and transmission for laser cavities.
- Deep-UV Lithography: CaF2 windows are used in deep-ultraviolet (DUV) lithography systems for semiconductor manufacturing. They enable the transmission of DUV light for patterning and etching processes in semiconductor fabrication.
- Astronomy: CaF2 windows are used in astronomical telescopes and observatories for observing celestial objects in the UV and IR spectra. They provide optical windows for UV and IR instruments onboard telescopes and satellites, allowing for scientific observations of stars, galaxies, and other astronomical phenomena.
| Size Tolerance | +0.0 / – 0.2mm |
| Thickness Tolerance | + / – 0.3mm |
| Wavelength Range (Uncoated) | 180 nm – 8.0 μm |
| AR Coating Range | 1.65 – 3 µm (-D Coating) |
| Clear Aperture | >85% |
| Parallelism | 5 arc min |
| Surface Quality | 40-20 |
| Bevel | available |
Advantages:
- Broad Spectral Transmission: CaF2 windows offer high transmission across a broad spectral range, from UV to IR wavelengths, making them suitable for various optical applications.
- Low Dispersion: CaF2 exhibits low dispersion in the UV and IR regions, enabling high-resolution imaging and spectroscopic measurements with minimal optical aberrations.
- Chemical Inertness: CaF2 is chemically inert and resistant to most acids, bases, and corrosive chemicals, providing long-term durability in harsh environments.
- Mechanical Strength: CaF2 windows are mechanically robust and can withstand mechanical stress and handling without fracturing or breaking easily.
- Thermal Stability: CaF2 has good thermal conductivity and thermal stability, allowing CaF2 windows to withstand temperature fluctuations and thermal shock.
We manufacture CaF2 windows using laser cutting, or diamond grinding and polishing techniques. Single-crystal CaF2 ingots are sliced into wafers or cut into desired shapes, and then the surfaces are polished to achieve optical quality. Advanced machining and polishing techniques are employed to produce CaF2 windows with precise dimensions and surface finishes.