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On-line monitoring method and system for optical element damages

A technology of optical components and monitoring systems, which is applied in the direction of material analysis, measuring devices, and scientific instruments through optical means, which can solve the problems of optical component damage and the inability to monitor optical component damage online in time, and achieve the effect of benefiting life

Active Publication Date: 2020-11-24
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an online monitoring method and system for damage of optical components to solve the technical problem in the prior art that the damage of optical components in the laser system cannot be monitored online in time

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  • On-line monitoring method and system for optical element damages
  • On-line monitoring method and system for optical element damages
  • On-line monitoring method and system for optical element damages

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Embodiment Construction

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses an on-line monitoring method and a system for optical element damages. The method comprises the steps that collecting ultrasonic signals generated when a preset position on thesurface of an optical element is irradiated; converting the ultrasonic signal into a digital signal; and calculating the damage position according to the digital signal, the propagation speed of theultrasonic signal in the optical element, the damage diameter, the preset position of the surface of the optical element and the emitting position of the ultrasonic signal. By implementing the invention, the real-time online monitoring of the damage condition of the optical element under the normal working condition of the laser is realized by adopting the photoinduced sound field effect; meanwhile, the damage position and size of the optical element can be calculated by acquiring propagation parameters of ultrasonic signals, and the damage condition of the optical element can be known in detail. Therefore, the lens can be moved in time under the normal working condition of the laser, a damaged area is avoided, and the service life of the laser is prolonged.

Description

technical field [0001] The invention relates to the technical field of laser damage testing, in particular to an online monitoring method and system for optical element damage. Background technique [0002] High-power laser drivers are required to work stably over a long period of time, or the performance of the system will not be significantly degraded. However, after the optical components in the system are irradiated with high-power laser, it is easy to damage the components. This damage will continue to develop under the action of subsequent laser pulses, affecting the beam output quality of high-power laser drivers. At the same time, the modulated laser pulses will cause damage to subsequent optical components, and in severe cases, the entire system will be paralyzed. The anti-laser damage characteristics of optical components will directly affect the design of the entire system and the performance of the system operation. Therefore, the problem of laser damage of opti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07G01N29/24G01N21/17
CPCG01N29/07G01N29/2418G01N21/1702G01N2291/011G01N2291/0289G01N2021/1706
Inventor 殷伯华刘垚赵伟霞刘俊标高莹莹韩立
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI