We offer a variety of optical components for use at far-infrared and mm/Terahertz wavelengths:

• Multi-mesh filters

• Anti-reflection coatings

• Photolithographic & wire grid polarisers

• Beamsplitters and Dichroics

• Optical lenses & vacuum windows

• Parabolic horn optics (Winston cones)

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Our Multi-mesh filter technology is unique and allows extremely precise wavelength selection. It has been developed over 40 years by our astronomical academic colleagues, and is now a cornerstone technology used in all major astronomical projects in the sub-millimetre and far-Infrared region of the spectrum for both ground and space-based applications. We are proud to be able to offer its extraordinary benefits to a wider scientific community. Low-pass, high-pass and band-pass structures are available with operational frequencies ranging from 30 GHz (10 mm, or 1 cm-1) to 30 THz (10 um, or 1 000 cm-1). These filters will operate at both room and cryogenic temperatures, with only a marginal change in their performance (edge position, transmission efficiency).

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We offer two polariser technologies for the THz region. Free-standing wire grid polarisers are designed for frequencies up to 3 THz and lithographic polarisers for higher frequencies. 

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Due to our experience working with quartz we are able to offer quartz quarter and half wave plates, AR coated over the entire THz range.

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Our surface coatings can be applied to a range of optical materials to generate prescribed transmission and reflection properties throughout the THz range. Anti-reflection coatings are applied to vacuum window materials such as quartz, sapphire and diamond. We also design coating schemes for quarter-wave and half wave-plates. 

 

We offer vacuum windows for the broad THz region. Standard materials include ultra high molecular weight polyethylene (UHMWPE), quartz, sapphire, diamond and KRS-5.

 

Finally, we offer Winston cones; these are non-imaging light concentrating components and are usually used along with our detectors.

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