Single photon detector and high-voltage quick adjusting circuit thereof

A technology for single-photon detection and adjustment of circuits, applied in instruments and other directions, can solve problems such as poor stability of circuit systems, and achieve the effects of improving stability, reducing offset voltage, and reducing interference

Pending Publication Date: 2019-09-06
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a single photon detector and its high-voltage fast adjustment circuit, which is used to solve the problem of poor stability of the circuit system in the prior art

Method used

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  • Single photon detector and high-voltage quick adjusting circuit thereof
  • Single photon detector and high-voltage quick adjusting circuit thereof
  • Single photon detector and high-voltage quick adjusting circuit thereof

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Embodiment Construction

[0020] Description will be made below in conjunction with the accompanying drawings.

[0021] Single Photon Detector Embodiment

[0022] Such as figure 2 As shown, the single photon detector includes a single photon detection diode D 2 , I-V conversion circuit and high voltage fast regulation circuit. In the picture: single photon detection diode D 2 Can be: photomultiplier tube, superconducting nanowire single photon detection tube, avalanche photodiode. The I-V conversion circuit is used to convert the current signal into a voltage signal, so that the detected single photon generates an electric pulse for subsequent circuit processing.

[0023] The high-voltage fast adjustment circuit includes a high-voltage circuit, a reference voltage circuit, and an operational amplifier U 1 , MOS tube Q 1 etc.; as other implementations, the MOS tube Q 1 Other types of switching tubes can also be selected.

[0024] The high-voltage circuit is generally a DC / DC step-up circuit or ...

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PUM

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Abstract

The invention relates to a single photon detector and a high-voltage quick adjusting circuit thereof. The high-voltage rapid adjustment circuit comprises: a high voltage circuit, a reference voltage circuit, an operational amplifier wherein the output end of the high-voltage circuit is used for outputting a set voltage; the output end of the reference voltage circuit is used for generating a reference voltage; and the in-phase input end of the operational amplifier is connected with the output end of the reference voltage circuit, the output end of the operational amplifier is connected with the control end of a switching tube, the input end of the switching tube is connected with the output end of the high-voltage circuit, the output end of the switching tube is used for being connected with the cathode of the single photon detection diode, and a capacitor is connected between the output end of the operational amplifier and the cathode of the single photon detection diode in parallel.The single photon detector and the high-voltage quick adjusting circuit thereof can prevent the breakdown of the photodiode, avoid the problems of ringing and oscillation and improve the stability ofthe circuit.

Description

technical field [0001] The invention relates to a single photon detector, in particular to a high-voltage rapid adjustment circuit of its high-voltage bias device. Background technique [0002] Single photon detectors can be used in laser ranging systems. It can improve the detection sensitivity of echo photons to the level of single photons, and plays an important role in ultra-long-distance measurement fields such as lidar, earth-moon laser ranging, and satellite laser ranging. [0003] To achieve single-photon detection capability, single-photon detectors usually work in the Geiger mode and have strong photoelectric conversion capabilities. When the target distance becomes smaller, the number of photons reflected from the target becomes larger, and the output current of the detector becomes larger. This makes single-photon detectors in Geiger mode likely to burn out due to too many photons when detecting close-range targets. Therefore, when the target distance is relat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
CPCG01J11/00
Inventor 陈水忠朱海博陈腾
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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