A Modular Photodetector Response Feature Detection System

Abstract

The invention relates to a modularized photoelectric detector response characteristic detection system. The modularized photoelectric detector response characteristic detection system comprises a first signal generator, a first digital oscilloscope, a direct-current high-voltage power supply, a second signal generator, a second digital oscilloscope, an industrial personal computer, an licel acquisition card, a first lens threaded sleeve, a second lens threaded sleeve, a white light point light source, a first loop-driving variable diaphragm, a first collimating lens, a double-layer turning wheel bearing device, an optical filter, an attenuation sheet, a second loop-driving variable diaphragm, an optical fiber, a second collimating lens and a narrow bandpass filter. The first lens threaded sleeve is provided with a light inlet and a light outlet, and the first loop-driving variable diaphragm, the first collimating lens, the optical filter, the attenuation sheet and the second loop-driving variable diaphragm are coaxially arranged in the light path direction and nested in the first lens threaded sleeve. The second lens threaded sleeve is provided with a light inlet and a light outlet, and the second collimating lens and the narrow bandpass filter are located in the second lens threaded sleeve and coaxially arranged in the light path direction. The licel acquisition card is connected with the industrial personal computer.

Description

technical field [0001] The invention relates to the field of laser radar atmospheric detection, in particular to a modularized photodetector response feature detection system. Background technique [0002] The principle of atmospheric detection lidar is that a beam of pulsed laser is emitted by a laser to excite the elastic scattering or resonant fluorescence of the atmosphere. (that is, photomultiplier tube, PMT) converts the echo light into an electrical signal, and the strength of this electrical signal represents the relevant information of the atmosphere. It can be seen that PMT is one of the indispensable components for lidar to collect echo light signals, especially for high-power aperture product high-altitude detection lidar, whose echo light is extremely weak and can only be detected by single-photon detection. In order to obtain information and more accurate results in higher atmospheric segments, high-power pulsed lasers and large-aperture telescopes are usually...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the photodetectors in the prior art, such as narrow application range, low reliability, and poor repeatability of detection results, so as to provide a modularized photodetector response characteristic detection system

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