Fibre coupled Hg1−xCdxTe detectors

Fibre-coupled mercury–cadmium telluride Hg1−xCdxTe (MCT) high performance infrared radiation (IR) detectors have been developed and fabricated. This new product is originated from 25 years experience of MCT detectors and IR fibre optics technologies. The product includes single- and multi-element detectors designed for registration of optical signals in wide-band and narrow-band mode in spectral range from 2 to 18μm. Detectors are manufactured in an integrated or modular design and include MCT optical sensors, optical couplers and fibre pig-tails or cables. Registered infrared radiation is delivered to the sensitive area of the detector through either chalcogenide IR-glass (CIR-) fibre (2–6μm) or polycrystalline infrared (PIR-) fibre (4–18μm). The unique feature of Hg1−xCdxTe alloys enables tuning spectral responsivity of the detector element for the ordered spectral range.