Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single-photon detection suppression circuit based on rapid current induction

A single-photon detection and current sensing technology, applied in instruments and other directions, can solve the problems of complex circuit structure, difficult implementation, and high cost, and achieve the effects of high detection efficiency, improved photon counting efficiency, and noise suppression.

Active Publication Date: 2014-01-01
WUXI TONGCHUN NEW ENERGY TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a single-photon detection and suppression circuit based on fast current induction, which solves the problems of complex circuit structure, high cost and difficult implementation in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single-photon detection suppression circuit based on rapid current induction
  • Single-photon detection suppression circuit based on rapid current induction
  • Single-photon detection suppression circuit based on rapid current induction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The single photon detection suppression circuit based on fast current sensing includes an avalanche photodiode, the avalanche photodiode is connected to the output terminal through the current source sensing module, the connection point of the avalanche photodiode and the current source sensing module is connected to the output terminal through a reset switch, and the current source The sensing module is connected to the reset switch through the suppression switch; the voltage applied to the avalanche photodiode is the avalanche voltage V B with additional voltage V EX The sum, when the photon arrives, the APD quickly avalanches to generate an avalanche current. The current source sensing module senses the increase in current and sends a signal to turn on the suppression switch. At this time, the voltage across the APD is lower than th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A single-photon detection suppression circuit based on rapid current induction comprises an avalanche photodiode which is connected with an output end through a current source induction module, a connecting point of the avalanche photodiode and the current source induction module is connected with the output end through a reset switch, and the current source induction module is connected with the reset switch through a suppression switch. Voltage added to the avalanche photodiode is the sum of avalanche voltage VB and additional voltage VEX, when a photon reaches, the avalanche photodiode (APD) generates avalanche currents rapidly, the current source induction module induces increasing of the currents and then sends a signal to enable the suppression switch to be turned on, at the moment, voltage of the two ends of the APD is lower than avalanche breakdown voltage, so that avalanche is stopped, and the output end generates an electric pulse. The electric pulse reaches the reset switch after a period of time delay, so that the circuit returns to the initial state of receiving the photon.

Description

technical field [0001] The invention belongs to the technical field of single-photon detection and suppression circuits, and relates to a single-photon detection and suppression circuit based on fast current induction. Background technique [0002] Single-photon detection technology is used in high-resolution spectral measurement, non-destructive material analysis, high-speed phenomenon detection, precision analysis, atmospheric pollution measurement, bioluminescence, radiation detection, high-energy physics, astronomical photometry, optical time-domain reflectometry (OTDR), Quantum key distribution system (QKD) and other fields have a wide range of applications. Because of its important position in the high-tech field, the single photon detector has become one of the key research topics in various countries. [0003] Single photon detection is an extremely weak light detection method that detects light intensity that is greater than the thermal noise level of the photodete...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 胡辽林曹京京谢德静
Owner WUXI TONGCHUN NEW ENERGY TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com