Excelitas Technologies has announced the release of its enhanced C30902SH family of Silicon (Si) Avalanche Photodiodes (APD) that provides the highest performance levels and is intended for use with optical powers less than 1 pW. This new family of Si APDs features high quantum efficiency (QE) and low dark count rates, enabling the development of single-photon detection systems for various applications, including quantum communication.
These APDs with ultra-low, stable dark count rates and high photon detection probability provide accurate measurement results to help prevent false-positive detection events. This upgraded product features the lowest noise for the detection of low light levels and makes compact system integration possible, allowing users to design application-optimized quenching electronics that perfectly match the SPAD performance.
Key Features
- Ultra-low dark count rates, enabling precise single photon counting
- High QE: 84% typical at 800nm
- Hermetically sealed packaging
- Wide operating temperature from -40oC to +85oC
- Enables detection in any application where the amount of light available is extremely low (less than 1 pW)
These devices can be used in either the linear mode (Vr < Vbr) at typical gains of 250 or greater, or in “Geiger” mode (Vr > Vbr) with extremely low and stable dark count rates and after pulsing ratios. Moreover, for greater performance, these high performance SPADs are available with single or dual-stage thermoelectric coolers.
