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26 January 2009InP-based negative feedback avalanche diodes
The operation of InP-based single photon avalanche diodes (SPADs) in Geiger mode provides great utility for the
detection of single photons at near-infrared wavelengths between 1.0 and 1.6 um. However, SPADs have performance
limitations with respect to photon counting rate and the absence of photon number resolution that, at the most
fundamental level, can be traced back to the positive feedback inherent in the impact ionization-driven avalanche
process. In this paper, we describe the inclusion of negative feedback with best-in-class InP-based single photon
avalanche diode (SPAD) structures to form negative feedback avalanche diodes (NFADs) in which many of the
present limitations of SPAD operation can be overcome. The use of thin film resistors as monolithic passive negative
feedback elements ensures rapid self-quenching with very low parasitic effects and wafer-level integration for creating
multi-element NFAD arrays. To our knowledge, this is the first demonstration of this approach with InP-based
avalanche diode structures. We present NFAD device properties, including pulse response, quenching dynamics, and
photon counting performance parameters such as photon detection efficiency.
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Mark A. Itzler, Xudong Jiang, Bruce Nyman, Krystyna Slomkowski, "InP-based negative feedback avalanche diodes," Proc. SPIE 7222, Quantum Sensing and Nanophotonic Devices VI, 72221K (26 January 2009); https://doi.org/10.1117/12.814669