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A geiger-mode APD photon counting system with adjustable dead-time and interchangeable detector
Deng, Shijie; Gordon, Declan; Morrison, Alan P.
A Geiger-mode avalanche photodiode (GM-APD) photon counting system is presented in this letter. The system provides a maximum counting rate of 35 Mcounts/s and is capable of directly displaying the counting rate and data logging to a PC. In this system, the detector can be easily changed to enhance its usefulness in different applications. A novel active quench and reset integrated circuit (AQR-IC) is designed for the system with adjustable hold-off time from several nanoseconds up to 1.6 μs with a setting resolution of ~6.5 ns. This facilitates optimal performance when using different types of APDs. The AQR-IC also registers each avalanche event as a TTL pulse that is processed by a microcontroller to calculate the photon-counting rate. The microcontroller can be interfaced with a PC over USB to record the measured data and to allow further processing. Software was also written to calculate the photon-counting rate, display the results and save the data to files.
Keyword(s): Geiger-mode avalanche photodiode; Single photon counting; Adjustable dead-time; Photon-counting system; Photonics; Cathodes; Radiation detectors; Integrated circuits; Graphical user interfaces; Detectors; Avalanche photodiodes; Integrated optoelectronics; Photodetectors; Photon counting
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: University College Cork
Citation(s): Deng, S., Gordon, D. and Morrison, A. P. (2016) 'A Geiger-Mode APD Photon Counting System With Adjustable Dead-Time and Interchangeable Detector', IEEE Photonics Technology Letters, 28(1), pp. 99-102. doi: 10.1109/LPT.2015.2487342
Publisher(s): Institute of Electrical and Electronics Engineers (IEEE)
File Format(s): application/pdf
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First Indexed: 2018-06-29 06:30:43 Last Updated: 2018-06-29 06:30:43