Chalcogenide Windows
Chalcogen elements—sulfur, selenium, tellurium, and polonium—comprise Group 16 of the periodic table and are essential components of chalcogenide glass. This material is prized for its infrared applications due to its superior transmission, high refractive index, and exceptional nonlinearity.
Chalcogenide windows at Avantier offer a compelling alternative to traditional germanium windows, providing a unique blend of optical and mechanical properties ideal for a wide range of applications. These advanced materials exhibit exceptional transmission in the infrared spectrum, making them invaluable for infrared spectroscopy, thermal imaging, and other optical systems operating in this wavelength range. Moreover, chalcogenide glasses possess a higher refractive index compared to germanium, enabling the design of more compact and efficient optical systems.
Key Properties
- Wideband IR Transmission: Ideal for thermal imaging, sensing, and spectroscopy, covering 3-5µm and 8-12µm bands.
- High Refractive Index: Enables compact, efficient optical systems, crucial in space-constrained applications.
- High Nonlinearity: Perfect for nonlinear photonic devices and circuits.
- Low Temperature Coefficient: Maintains performance across temperature variations, ideal for athermalized lenses.
- Reliable Machinability: Easily shaped into custom spherical and aspheric lenses.
Applications and Benefits
Chalcogenide optics are used in infrared imaging, photonic integrated circuits, sensors, laser optics, and materials science and engineering, providing a cost effective alternative to germanium optics with high precision and quality. Chalcogenide windows provide unique optical and electrical properties, enabling applications in memory devices, optical fibers, precision glass molding, and optical thermal systems.
Sample Specifications for Chalcogenide Windows
Size (mm) |
Surface precision |
Coating Film |
D25 x T1.5 |
1/4λ |
Ravg <5.0% @3-12um |
D12 x T1 |
1/4λ |
Ravg <5.0% @3-12um |
Custom Chalcogenide Windows
Avantier’s custom-designed chalcogenide windows offer superior optical clarity and durability, ensuring reliable results every time. Contact our experts today to discuss your specific research needs.
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