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A mirror drift stability testing system and method

A technology of stability testing and mirror angle, applied in the laser field, can solve problems such as light source stability and diagnostic system stability restricting the accuracy of mirror angle drift measurement, achieve high extraction accuracy, rich information, and eliminate uncertainty Effect

Active Publication Date: 2019-07-16
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

The method used in the prior technology "Zhang Guoxuan, "Using a CCD camera to detect the pointing stability of the laser output beam", [J] Applied Optics, 19(2): 15-18, 1998" uses simple equipment, but the light source used in the test Stability and diagnostic system stability will seriously restrict the measurement accuracy of mirror drift

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  • A mirror drift stability testing system and method
  • A mirror drift stability testing system and method
  • A mirror drift stability testing system and method

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The feature A adopted in this example is a circular hole (2), and the feature B is a crosshair (5), and they are hard-linked as a whole to be placed on the focal plane of the lens (3). The light source (1) illuminates the circular hole (2) in full coverage, and the light beam is transmitted to the lens (3) after passing through the circular hole (2), and then passes through the lens (3) again after being reflected by the mirror (4) under test, and on the focal plane A circular hole image enlarged in equal proportions is formed, and the angle of the measured reflector (4) is adjusted so that the circular hole image overlaps with the crosshairs (5). And then through the diagnostic system...

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Abstract

The invention belongs to the field of laser technologies, and more particularly relates to a reflector angle drift stability testing system and a reflector angle drift stability testing method. According to the reflector angle drift stability testing system and the reflector angle drift stability testing method, light beam pointing stability is converted into variation of object-image relative positions by adopting an imaging design, and the influence of a light source and a diagnostic system on tests is eliminated; and by adopting an optical design, two feature objects associated with reflector stability are placed on the same plane for solid connection, thereby eliminating influence on the independent stability of the feature objects. The reflector angle drift stability testing system and the reflector angle drift stability testing method are suitable for stability tests of various kinds of optical elements in large-sized laser devices.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a testing system and method for angular drift stability of a reflector. Background technique [0002] The beam pointing stability of the laser device is an important output index of the system. The stability of the angular drift of the mirror is an important basis for realizing the stability of the beam pointing. To analyze and improve the stability of the angular drift of the mirror must have accurate angular drift stability of the mirror measurement method. In addition, the optical path of the laser device is complex, and the method of measuring the angular drift of the mirror needs to be flexible and simple, and have the ability of online measurement. Therefore, it is of great significance to study the angular drift measurement method of the mirror with strong adaptability and high measurement accuracy. [0003] With the improvement of measurement accuracy requirements and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
CPCG01M11/0207
Inventor 李平赵润昌黄醒陈文棋靳赛王伟周丽丹李志军李天恩梁樾李森
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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