Long-life prediction method for laser optical components

Abstract

A method for predicting the life of laser optical components, which aims to solve the problem of long-term use of existing optical components under arbitrary flux irradiation; the invention includes: taking the number of laser pulses as a variable to correspond to the damage threshold under the number of pulses The threshold function under the specific laser parameters of the optical component is obtained for the dependent variable fitting. A laser damage threshold test experiment with a large number of pulses is realized in a relatively short period of time by using a high repetition rate laser. By testing the threshold function under the high repetition rate laser and the function of the threshold difference between the high repetition rate laser and the target laser on the number of pulses under the same pulse number, the life prediction function prediction model is obtained. The invention can perform accelerated experiments on the life test of laser optical components, shorten the test time, and use the test results of the invention to obtain the service life of optical components under specific pulse times; the invention is suitable for the field of life prediction of laser optical components.

Description

technical field [0001] The invention relates to laser optical components, in particular to a long-life testing method for laser optical components. Background technique [0002] The life of laser optical components is the maximum number of pulses when the optical components are exposed to a certain flux of laser radiation without growth and functional damage. Usually, the lifetime requirements of optical components are related to the operating time requirements of lasers and system devices. For the optical components of space lasers, the service life is required to be as long as several years or even more than ten years. It is unrealistic and uneconomical to test optical components for such a long time. However, there is no method for testing the life of laser components in terms of long life. [0003] The life test of general optical components is usually carried out under the conditions of use under the corresponding conditions of the life test. General accelerated test...

AI Technical Summary

Problems solved by technology

However, the life of optical components cannot be accelerated by simply increasing the pulse repetition frequency. This is because the damage performance of optical components is related to the repetition frequency parameters of the laser. The change of repetition frequency may change the mechanism of damage, so it is necessary to carry out A reasonable accelerated test must be comparable to its service conditions

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