Custom AMTIR Optical Components

Alfa Chemistry customizes infrared optical components using amorphous materials that transmit infrared radiation (Ge33As12Se55, AMTIR), a glass-like sulfide material with optical properties similar to germanium, but with a lower refractive index. All custom AMTIR optics are put through rigorous testing by skilled experts in a cutting-edge metrology facility, giving customers peace of mind that their needs will be satisfied. Get in touch with us for your customer service as soon as possible!

Our Services

Alfa Chemistry offers premium bespoke AMTIR optics, such as windows, lenses, and prisms, that will be produced in accordance with your specific requirements. We can offer both coated and uncoated optical options, including diamond-like carbon coating and broadband antireflection coating. The table that follows lists our typical manufacturing requirements. Our skills are constantly growing, so if your need is not covered above, please get in touch with our technical sales team, who will be able to help you out because we have years of experience in this area.

AMTIR Windows

The most commonly requested specifications for an ATMIR window are as follows:

AMTIR Prisms

The most commonly requested specifications for an ATMIR prism are as follows:

AMTIR Ground Blanks

We can provide grinding blanks that can be used to manufacture optical components. The most common specifications for ATMIR ground blanks are as follows.

Applications:

• Thermal imaging systems: AMTIR components are employed in thermal imaging systems because of their uniform refractive indices and broad transmission range.
• YAG laser systems: Nd:YAG laser systems, which are normally fairly low power and output 1064 nm light, frequently employ AMTIR optics.

AMTIR's Optical Properties

Although AMTIR has a broad transmission range of 0.75 to 14 µm, it performs best in the 8~12 µm region where its dispersion and absorption are at their lowest levels. Although its optical characteristics and density are comparable to those of germanium, its lower refractive index makes it a good partner for germanium in achromatic doublet lenses for color correction in optical systems.

Fig 1. Transmittance of AMTIR. (Yadav A, et al. 2018)

Thermal scattering is avoided by AMTIR's low-temperature coefficient of refraction, which is advantageous in systems with changing temperatures. It is important to note that AMTIR has a maximum operating temperature of 300°C. The optical characteristics of AMTIR are briefly described here.

If you need technical advice, please contact our technical team to learn more about our high-quality services.

Reference

1. Yadav A, et al. (2018). "Thermal Conductivity of Chalcogenide Glasses Measured by Raman Spectroscopy." Advanced Optics for Defense Applications: UV through LWIR III. 10627: 106270P.