Self-quenching and self-recovering InGaAs∕InAlAs single photon avalanche detector
- 13 October 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (15), 153504
- https://doi.org/10.1063/1.3000610
Abstract
To prevent device damage through thermal runaway, conventional III–V single photon avalanche diodes(SPADs) operate in gated mode where the device is biased above breakdown only for a short gating period. Here a free-running In 0.53 Ga 0.47 As ∕ In Al As SPAD with built-in negative feedback mechanism is reported. A physical model is also developed to formulate the avalanche process with negative feedback. Introducing negative feedback enables the device to possess self-quenching and self-recovering capabilities. Such devices have demonstrated free-running single photondetection at 1550 nm wavelength with single photondetection efficiency of 11.5%, dark count rate of 3.3 M ∕ s , and a self-recovery time of 60 ns at 160 K .Keywords
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