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A sampling attenuation device for a high-energy laser array detector

A technology of array detectors and attenuation devices, which is applied in the field of sampling attenuation devices for high-energy laser array detectors, can solve problems such as limited detection angles and failure to meet the use requirements, and achieve the effect of improving the angular response range

Inactive Publication Date: 2018-04-10
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the laser power density is high and the measurement equipment is required to have a large detection angle, the existing array detector method cannot meet the requirements due to the limited detection angle

Method used

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  • A sampling attenuation device for a high-energy laser array detector
  • A sampling attenuation device for a high-energy laser array detector

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is a schematic diagram of the structure of the sampling attenuation device for the high-energy laser array detector of the present invention, figure 2 It is a schematic diagram of the structure of the sampling attenuator in the sampling attenuation device for the high-energy laser array detector of the present invention. in figure 1 , figure 2 Among them, a sampling attenuation device for a high-energy laser array detector of the present invention includes several sampling attenuators with the same structure, and the sampling attenuators are arranged in an array. Each sampling attenuator includes a front copper plate 1, a rear copper plate 2, an attenuator fixing plate 3, a cylindrical attenuator 5 and an attenuator pressing plate 4.

[0025] The front part of the sampling attenuator is provided with a front copper plate 1, and after the front copper plate 1, a rear copper plate 2, an attenuating sheet fixing plate 3, and an attenuating sheet pressing plate ...

Embodiment 2

[0039] The basic structure of this embodiment is the same as that of embodiment 1, except that the number of sampling attenuators is 600. In this embodiment, the spacing between adjacent sampling attenuators is not equal. The spacing of 400 sampling attenuators is 5mm, the spacing of 200 sampling attenuators arranged around is 10mm, and the shape of the sampling attenuation device is cylindrical. The angle α is 23°.

Embodiment 3

[0041] The basic structure of this embodiment is the same as that of embodiment 1, except that the number of sampling attenuators is 700. In this embodiment, the spacing between adjacent sampling attenuators is not equal. The spacing of 400 sampling attenuators is 5mm, the spacing of 300 sampling attenuators arranged around is 10mm, and the shape of the sampling attenuation device is square; the α angle is 8°; the front copper plate is made of red copper with gold plating on the surface. The rear copper plate is made of gold-plated copper, and the attenuator fixing plate is made of graphite.

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Abstract

The invention provided a sampling attenuator device for high energy laser array detectors. The sample attenuating device comprises a plurality of sampling attenuators of the same structure arranged in accordance with the rules. Each sampling attenuator comprises a front copper plate, a rear copper plate, a attenuator fixing plate, an attenuating plate and an attenuating plate pressboard. The front of the sampling attenuator is provided with a front copper plate and the rear copper plate is in close contact with the front copper plate. The attenuating plate is fastened to the rear copper plate. The attenuator plate is mounted on the attenuator fixing plate. The attenuating plate pressboard is in close contact with the attenuator plate. The laser beam is sampled by two space oblique holes in the front copper plate, thus a large angle detection of the laser beam can be realized. The front copper plate is used for diffuse reflection non-sampling high-energy laser, which has a high damage threshold. The sampling attenuator device for high energy laser array detector solves the problem of high energy density and large detection angle in the array detector measurement, and is of great significance for the measurement of laser intensity distribution by the ball hole attenuation and the attenuation plate thickness or reflectivity set by the front copper plate and the rear copper plate.

Description

Technical field [0001] The invention belongs to the technical field of laser parameter measurement, and specifically relates to a sampling attenuation device for a high-energy laser array detector. Background technique [0002] The application of lasers in scientific research, industry, national defense and other fields is becoming more and more extensive. It is often necessary to measure the parameters related to the intensity distribution such as power, intensity distribution, centroid, jitter and other parameters related to the intensity distribution at the same time. At present, the main methods of measuring intensity distribution parameters are ablation, scanning, array detector, imaging, etc. When the installation space is limited, the high-energy laser array detector is used as an important measure of large-aperture and high-power density laser parameters. When the laser power density is high and the measurement equipment is required to have a large detection angle, the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/04
CPCG01J1/0418
Inventor 何均章周山张卫胡晓阳庞淼魏继峰高学燕常艳周文超
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS