32 Bin Near-Infrared Time-Multiplexing Detector with Attojoule Single-Shot Energy Resolution

TL;DR

This paper introduces two near-infrared photon counting time-multiplexing detectors with 16 and 32 bins, achieving attojoule single-shot energy resolution, suitable for various pulse rates and widths.

Contribution

It presents two practical implementations of high-resolution, high-speed near-infrared photon detectors using commercially available components and rapid gating techniques.

Findings

Achieved attojoule level single-shot energy resolution.

Demonstrated detector operation at up to 6 MHz pulse rates.

Implemented practical, commercially feasible detector configurations.

Abstract

We present two implementations of photon counting time-multiplexing detectors for near-infrared wavelengths, based on Peltier cooled InGaAs/InP avalanche photo diodes (APDs). A first implementation is motivated by practical considerations using only commercially available components. It features 16 bins, pulse repetition rates of up to 22 kHz and a large range of applicable pulse widths of up to 100 ns. A second implementation is based on rapid gating detectors, permitting deadtimes below 10 ns. This allows one to realize a high dynamic-range 32 bin detector, able to process pulse repetition rates of up to 6 MHz for pulse width of up to 200 ps. Analysis of the detector response at 16.5% detection efficiency, reveals a single-shot energy resolution on the attojoule level.