Time-domain modulation time-dependent single-photon counting device and time-domain modulation time-dependent single-photon counting system

Abstract

The invention relates to a time-domain modulation time-dependent single-photon counting device and a time-domain modulation time-dependent single-photon counting system. The invention mainly relates to the technical field of transient photon measurement. The single-photon counting device of the present application comprisesa drive circuit, a single-photon detector and a timing circuit, wherein thedrive circuit, the single-photon detector and the timing circuit are electrically connected in sequence, the single-photon detector is electrically connected with the timing circuit, and the time domain modulation time-dependent single-photon counting realizes the time amplification of a photon event to be measured through the time domain modulation single-photon detector and the corresponding time domain modulation drive circuit so as to improve the time measurement precision of the whole system. A photon event to be measured is amplified in time, the influence of electron transit time dispersion in the detector and timing precision errors of the timing circuit module on the timing precision of the single-photon counting device is effectively reduced, and the measurement precision of thesingle-photon counting device is improved.

Description

technical field [0001] The invention relates to the technical field of transient photon measurement, and mainly relates to a time-domain modulation time-correlated single-photon counting device and system. Background technique [0002] Time correlated single photon counting (TCSPC for short) is a photon arrival time measurement technology, which was established by Bollinger, Bennett and Koechlin in the 1960s to detect the luminescence of scintillators excited by rays. Later, people Applying it to the measurement of fluorescence lifetime, the time resolution of the TCSPC system depends on the accuracy of the detector for single pulse arrival time measurement, and the measurement accuracy is jointly determined by the time resolution of the detector and the timing accuracy of the timing circuit module. [0003] In the prior art, the TCSPC system is mainly composed of a detector and a timing circuit. The accuracy of the timing circuit can reach several picoseconds, while the det...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a device and system for time-domain modulation and time-correlated single photon counting in order to solve the problem of increasingly high detection accuracy in the prior art. It is an urgent problem to be solved in the development of TCSPC technology to overcome the influence of the electron transit time dispersion inside the detector and the timing accuracy error of the timing circuit module on the timing accuracy of the TCSPC system to meet the application requirements of higher time-resolved photon counting

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