High-Bandwidth Photon-Counting Detectors with Enhanced Near-Infrared Response
Long-range optical telecommunications (LROT) impose challenging requirements on detector array sensitivity at 1064nm and arrays timing bandwidth. Large photonic arrays with integrated beam acquisition, tracking and/or communication capabilities, and smart pixel architecture should allow the implementation of more reliable and robust LROT systems. Integration of smart pixel technology for parallel data acquisition and processing is currently available in silicon. Current silicon photon-counting detector arrays benefit from a worldwide manufacturing and R&D infrastructure but their response at 1064nm is not suitable for LROT.
In Phase I we proposed to verify the feasibility of increasing the responsivity of aPeak's silicon photon counting arrays at 1064nm by increasing their quantum absorption efficiency and demonstrating sub-nanosecond timing resolution. Phase I resulted in photon counting arrays with enhanced response at 1064 nm. Modules to be implemented into the readout IC (ROIC) have been fabricated in compact ASIC designs, suitable for integration into the smart pixel fabric
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