Method and device for laser damage measurement of components
A technology of laser damage and measurement method, which is applied in the direction of measuring device, optical instrument test, machine/structural component test, etc. It can solve the problems of low accuracy, large uncertainty of measurement results, and comparison of unfavorable component samples, etc., to achieve High accuracy, small deviation, and effect of reducing influence
Active Publication Date: 2019-03-15
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Among them, 1-on-1 is a commonly used evaluation processing method, but its measurement results have large uncertainty and low accuracy, which is not conducive to the mutual comparison between component samples, which is not conducive to reflecting non-significant differences in research and production. Influencing factors
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[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0017] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.
[0018] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not inten...
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The invention provides a method and a device for measuring element laser damage. In the case of measurement, laser pulses with basically the same energy and energy density are adopted to perform successive multiple irradiation on each preset testing point, the optical image of the testing point is monitored in real time to judge whether functional damage happens to the testing point, and the laser energy density value for each time of irradiation is acquired in an online mode; and according to the functional damage judgment result of the testing point and the online laser energy density value, an element functional damage measurement curve is calculated and generated. According to the method of measuring the element laser damage, the measurement result is high in accuracy and quick in convergence rate, deviation among measurement curves obtained by multiple times of measurement is small, and influences on the final measurement result by human factors such as different measurement persons and a measurement order can be effectively reduced.
Description
technical field [0001] The invention relates to the technical field of laser damage testing, in particular to a component laser damage measuring method and device. Background technique [0002] The international standard ISO 21254–2 defines two methods for measuring the laser damage threshold of components with different physical meanings, 1-on-1 and S-on-1. Among them, 1-on-1 is a commonly used evaluation processing method, but its measurement results have large uncertainty and low accuracy, which is not conducive to the mutual comparison between component samples, which is not conducive to reflecting non-significant differences in research and production. influencing factors. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a component laser damage measurement method and device. [0004] On the one hand, a preferred embodiment of the present invention provides a method for measuring component laser damage, the metho...
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IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 张哲潘峰刘志超郑轶汤鹏唐明罗晋吴倩卫耀伟张飞王震
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS