A photodiode is a semiconductor device that converts light into current. It is widely used as a photodetector for accurate measurement of light intensity in science and industry. It generally has a more linear response than photoconductors. Photodiodes are also widely used in various medical applications, such as detectors for computed tomography (coupled with scintillators), instruments to analyze samples (immunoassay), and pulse oximeters. Our suppliers offer a wide range of photodiode products: GaAs, InGaAs, Si photodiodes, APD-Modules and so on. Azimuth Photonics work with such world leader manufecturers as Laser Components, Becker&Hickl GmbH, OSI Optoelectronics, SGLUX.

Avalanche Photodiodes

Similar to photomultipliers, avalanche photodiodes are used to detect extremely weak light intensities. Si APDs are used in the wavelength range from 250 to 1100 nm, and InGaAs is used as semiconductor material in APDs for the wavelength range from 1100 to 1700 nm.


The APD modules are based on low-noise avalanche photodiodes made of either silicon or InGaAs with a built-in pre-amplifier and high voltage supply. A temperature compensation function allows the APD to be operated at constant gain across a wide operating temperature range. APD modules enable very low light levels to be detected quickly and simply in a variety of applications such as laser radar, rangefinding, data transfer or biomedical analysis.

UV photodiodes

Optoelectronic components for measurement of ultraviolet radiation are widly used for monitoring of UV purification lamps, curing lamps, sun’s UV radiation. SiC photodiodes have broadband UV sensitivity and blindness in visible range. They feature the very low dark current, bullet proof radiation hardness and low temperature coefficient of the signal.