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A Calibration Method for Beam Quality β Factor Measuring System

A technology of beam quality and measurement system, applied in the field of optical measurement, to avoid complexity and uncertainty, and to have good application prospects and effects

Active Publication Date: 2020-05-12
METROLOGY & MEASUREMENT CENT OF CHINA ACADEMY OF ENG PHYSICS
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a calibration method for beam quality β factor measurement system, solve the problem of accurate evaluation of high energy laser beam quality β factor, and provide technical basis for the accurate and reliable value of beam quality β factor measurement system in the future

Method used

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  • A Calibration Method for Beam Quality β Factor Measuring System
  • A Calibration Method for Beam Quality β Factor Measuring System
  • A Calibration Method for Beam Quality β Factor Measuring System

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Embodiment

[0045] Using this method to calibrate the beam quality β factor measurement system is as follows:

[0046] (1) First, select the appropriate standard aberration plate according to the different β-factor measurement ranges and receiving apertures of the beam quality β-factor measurement system;

[0047] (2) Then put the standard aberration plate into the fixture and place it on the transmission optical path of the collimator;

[0048] (3) Turn on the collimator light source, so that the standard parallel beam emitted by it passes through the standard aberration plate and then enters the beam quality β factor measurement system;

[0049] (4) Load the beam quality β factor standard value β corresponding to this standard aberration plate s The calculation process is as follows:

[0050] According to the scalar diffraction theory, the light intensity distribution of the beam on the detection surface of the beam quality β factor measurement system is:

[0051]

[0052] In the fo...

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Abstract

The invention discloses a calibration method for a beam quality beta factor measurement system, and the method employs the instruments: a collimator, a standard aberration board, the beam quality betafactor measurement system, and an aperture diaphragm in necessity. The invention provides the calibration principle of the calibration method and the specific calibration method, so the calibration coefficient of the beam quality beta factor measurement system can be obtained, thereby guaranteeing that the beam quality beta factor measurement system is accurate and reliable in measurement value,solving a problem of accurate estimation of a high-energy laser beam quality beta factor, and providing a technical basis for the accurate and reliable measurement value of a corresponding beam quality beta factor measurement system in future.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and relates to a calibration method of a beam quality β factor measurement system, in particular to a calibration method of a β factor parameter of a beam quality β factor measurement system, which is suitable for characterizing a high-energy laser beam quality β factor measurement system calibration. Background technique [0002] At present, in the research and application fields of high-energy laser technology, power / energy and beam quality are the most important parameters of high-energy laser systems. With the development of technology, the high-energy laser system is required to be close to the diffraction limit, so it is very important and urgent to accurately measure the beam quality β factor. The smaller the beam quality β factor, the stronger the focusability of the laser beam and the higher the far-field energy concentration. However, in the process of beam quality β facto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/02
CPCG01J1/0295
Inventor 王艳茹徐德丁宇洁冉铮惠
Owner METROLOGY & MEASUREMENT CENT OF CHINA ACADEMY OF ENG PHYSICS
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