PEM / PEMI series

10.6 µm Photoelectromagnetic IR detectors, ambient temperature, optically immersed and flat

Features

• Ambient temperature operation
• No bias required
• Wide spectral range (2 to 12 µm)
• D*(10.6 µm) up to 2·10⁷cmHz^1/2/W
• Response time of 1 ns or less
• No flicker noise
• Operation from DC to VHF
• Lightweight, rugged and reliable
• Low cost
• Custom design upon request

Description

The PEM series detectors operate on the photoelectromagnetic effect photovoltage in the semiconductors. The devices are typically optimized for the best performance at 10.6 µm. PEMI-L have been optically immersed to high refractive index GaAs (or CdZnTe) hyperhemispherical (standard) or hemispherical (option) lenses. The detector include a quaternary semiconductor (HgCdZn)Te with selected composition and doping profiles, and of miniature permanent magnets to produce very strong magnetic fields.

The PEM detectors are exceptionally well suited for heterodyne detection of 10.6 µm radiation. Exhibiting no flicker noise, they can be at the same time used for detection of CW and low frequency modulated radiation in the whole 2-12 µm spectral range. Custom detectors such as for e.g. single elements of various sizes, quadrant cells and multielement arrays, various specialized packages and connectors are available upon request.