Sulphur Based Chalcogenide Glass

Chalcogenide Materials

Chalcogenide material is ideal for mid-IR optics because they have a wide transmission range from 0.5μm to 25μm, low refractive index temperature coefficient (dN/dT), low dispersion, and versatile glass compositions. The benefits of Chalcogenide in comparison with Germanium (Ge), Zinc Selenide (ZnSe), and other IR materials are allowing higher production efficiency thus lowering production costs and consumption of scarce resources like Ge.

GradeCompositionρ (g/cm³)
Chalcogenide Compositions

Chalcogenide can also be manufactured in batches using precision molding technology as compared to single-point diamond turning like Ge, ZnSe, and other IR materials. With precision molding technology, chalcogenide can make into flat, spherical, and aspherical optical lenses.

Diameter Tolerance±0.015mm±0.005mm
Thickness Tolerance0.03mm0.005mm
Irregularity (P-V)<1µm<0.6µm
Irregularity (RMS)0.3µm0.08 – 0.15µm
Centering Error1′1′
Surface Quality60-4020-10
General Specifications

What is chalcogenide material?

Chalcogenide materials are a class of compounds composed of elements from the chalcogen group, which includes oxygen (O), sulfur (S), selenium (Se), and tellurium (Te). These materials exhibit unique properties that make them valuable for various applications, particularly in electronics and optics. They are widely used in optics for their ability to transmit infrared light and their potential for manufacturing optical components like lenses and waveguides. Chalcogenide materials are a versatile group of materials with a wide range of potential applications.

What are chalcogenide glasses used for?

Some of the common uses of chalcogenide glasses include infrared (IR) optics, fiber optics, photonic/optical devices, infrared sensors, phase-change memory, night vision goggles, thermal imaging cameras, nonlinear optics, photovoltaic devices, microelectronics, and gas sensors. As research into these materials continues, it is likely that we will see even more innovative applications for them in the future.

What are the properties of chalcogenide glass?

Chalcogenide glasses are a type of amorphous solid that is made up of chalcogen elements, such as sulfur, selenium, and tellurium. They have a wide range of properties that make them useful in a variety of applications. Some of the key properties of chalcogenide glasses include IR transparency, electrical conductivity, optical nonlinearity, chemical stability, biocompatibility, low melting point, low toxicity, doping, high refractive index, semiconducting behaviour, amorphous nature, low phonon energy, wide bandgap, and thermal stability.

What is an example of chalcogenide glass?

These are few of our chalcogenide compositions: Ge₃₃As₁₂Se₅₅, Ge₂₂As₂₀Se₅₈, Ge₂₀Sb₁₅Se₆₅, As₃₀Sb₄Se₆₃Sn₃, Ge₂₈Sb₁₂Se₆₀, As₄₀Se₆₀, Ge₁₀As₄₀Se₅₀, As₄₀Se₆₀, and Ge₃₀As₁₃Se₃₂Te₂₅.

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