PCQ series

IR Photoconductors quadrant geometry

Features

• Ambient temperature operation

• D*(10.6 µm) ≥9·106cmHz1/2/W

• Time constant of 1 ns or less

• Wide dynamic range

• Perfect match to fast electronics

• Convenient to use

• Low cost

• Prompt delivery

• Custom design upon request

Description

The PCQ-λopt (λopt - optimal wavelength in micrometers) series detectors are quadrant, high speed, ambient temperature IR photoconductive detectors. The devices are optimized for the maximum performance at λopt. Cut-on wavelength is limited by GaAs transittance (~0.9 µm). Bias is needed to operate photocurrent. Performance at low frequencies (<20 kHz) is reduced due to 1/f noise. Highest performance and stability are achieved by application of variable gap (HgCd)Te semiconductor, optimized doping and sophisticated surface processing.

The detectors are well suited for broadband CO2 laser detection due to a very short time constant and perfect match to fast electronics.

Standard detectors are available without window in specialized SMA based package.

Custom devices such as various sizes, configigurations, connectors, windows and optical filters are available on request.