Large area avalanche photodiodes

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Advanced Photonix, a division of OSI Optoelectronics, has introduced compact and rugged Large Area Avalanche Photodiodes (LAAPDs). The new LAAPDs are the largest avalanche photodiodes in the industry, according to the firm, and are available in 3, 5, 10 and 16mm active area diameters.

The devices operate at up to 2,000V, with gains of up to 300. With extremely low noise levels and high stable gain, the photodiodes are offered in cooled or uncooled packages. The LAAPDs are available with high sensitivity in blue, red or deep UV spectral regions down to 150nm with 120 per cent quantum efficiency.

They are ideal for scintillation or direct x-ray detection applications.