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Novel laser detector based on mid-infrared ultrafast laser

A detector and infrared ultra-high technology, which is applied in the field of laser technology and measurement, can solve the problems of small detection range, low measurement accuracy, and poor sensitivity, and achieve the effects of high real-time detection accuracy, long detection distance, and high peak power

Active Publication Date: 2021-03-26
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing detection device or rangefinder has single function, small detection range, poor sensitivity and low measurement accuracy

Method used

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  • Novel laser detector based on mid-infrared ultrafast laser
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  • Novel laser detector based on mid-infrared ultrafast laser

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Effect test

Embodiment 1

[0059] Embodiment 1 is based on the novel laser detector of the present invention for distance measurement in unfamiliar liquids.

[0060] The structure of a new laser detector based on mid-infrared ultrafast laser is as follows: figure 1 As shown, including: light source system, beam redirection system, beam shaping system, detection system, signal processing system;

[0061] The light source system includes a mid-infrared ultrafast laser; the beam redirection system includes a first total reflection mirror 31, a second total reflection mirror 32, a third total reflection mirror 33, and a fourth total reflection mirror 34; the beam shaping system includes a window plate 20, The first band curvature reflector 21, the second band curvature reflector 22, the 3rd band curvature reflector 23, the fifth total reflection mirror 24; The detection system includes an inner photodetector 41, an outer photodetector 42; the signal processing system includes Receiving circuit 50, control ...

Embodiment 2

[0090] Embodiment 2 measures gas species based on the novel laser detector of the present invention.

[0091] The structure of a new laser detector based on mid-infrared ultrafast laser is as follows: figure 1 As shown, including: light source system, beam redirection system, beam shaping system, detection system, signal processing system;

[0092] Such as image 3 As shown, the light source system includes a mid-infrared ultrafast laser 1; the beam redirection system includes a first total reflection mirror 31, a second total reflection mirror 32, a third total reflection mirror 33, and a fourth total reflection mirror 34; the beam shaping system includes The window plate 20, the first reflector with curvature 21, the second reflector with curvature 22, the third reflector with curvature 23, the fifth total reflector 24; the detection system includes an inner photodetector 41 and an outer photodetector 42; The signal processing system includes a receiving circuit 50, a cont...

Embodiment 3

[0121] Embodiment 3 detects the concentration of methane gas based on the novel laser detector of the present invention.

[0122] The structure of a new laser detector based on mid-infrared ultrafast laser is as follows: Figure 6 As shown, including: light source system, beam redirection system, beam shaping system, detection system, signal processing system;

[0123] The light source system includes a mid-infrared ultrafast laser 1; the beam redirection system includes a first total reflection mirror 31, a second total reflection mirror 32, a third total reflection mirror 33, and a fourth total reflection mirror 34; the beam shaping system includes a window plate 2 , the first band curvature reflector 21, the second band curvature reflector 22, the 3rd band curvature reflector 23, the fifth total reflection mirror 24; Detection system includes inner photodetector 41, outer photodetector 42; Signal processing system Including receiving circuit 50, control processor 51, inter...

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Abstract

The invention discloses a novel laser detector based on intermediate infrared ultrafast laser, and belongs to the technical field of laser technology and measurement. The novel laser detector mainly comprises a light source system, a light beam turning system, a light beam shaping system, a detection system, a signal processing system and a closable structure. Based on the features of high peak power, high signal-to-noise ratio and high repetition frequency of ultrafast laser in a middle-infrared band, the distance of the measured object and the gas type and concentration of the environment where the measured object is located are detected. The device has the advantages of being simple, high in measurement precision and capable of working under the condition of low visibility, and can be applied to the fields of high-precision detection, military affairs, engineering measurement and the like.

Description

technical field [0001] The invention belongs to the field of laser technology and measurement technology, and in particular relates to a novel detector based on mid-infrared ultrafast laser. Background technique [0002] Ultrafast mid-infrared lasers have many advantages, with pulse widths in picoseconds (10 -12 s) or even femtoseconds (10 -15 s) level, with excellent performances such as small pulse width, high peak power (greater than kilowatts), and high repetition frequency (>MHz). The detection range is large, the measurement accuracy is high, and the response speed is high. Utilizing the above-mentioned advantages of mid-infrared ultrafast lasers, the present invention aims to propose a novel detector based on ultrafast lasers, which will realize material detection and laser ranging. Unlike continuous lasers and traditional long-pulse lasers, ultrafast lasers have ultrashort pulses and super-intensity characteristics, and can obtain high peak light intensity with...

Claims

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Application Information

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IPC IPC(8): G01S17/02G01S17/88G01S7/48G01S7/481G01S7/484G01S7/4861G01N21/3504
CPCG01S17/02G01S17/88G01S7/4802G01S7/481G01S7/484G01S7/4861G01N21/3504
Inventor 周伟鲜安华曹雪柳阳雨王敬如康健陈浩
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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