High-energy laser beam quality test method and test system
A beam quality, high-energy laser technology, applied in the field of laser testing, to achieve the effect of improving confidence, controlling temperature rise, and reducing thermal effects
Active Publication Date: 2020-12-18
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a high-energy laser beam quality testing method and testing system, and solve the existing problems of laser beam quality measurement through the wedge
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in...
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Abstract
The invention relates to a high-energy laser beam quality test method and test system, and the method comprises the steps: setting a cooling module on the back surface of a diffraction light-splittingelement which is used for splitting a laser beam, wherein the cooling module adopts one or more modes of micro-channel heat sink, semiconductor refrigerator heat conduction and direct liquid coolingfor cooling and heat dissipation; making laser incident light form a certain incident angle with the diffraction light-splitting element, and incident to the light facing surface of the diffraction light-splitting element to obtain mirror reflection light and first-order diffraction light; and measuring the power of the first-order diffraction light by adopting a power meter, and measuring the light beam quality of the mirror reflection light by adopting a light beam quality analyzer so as to obtain the light beam quality of the high-energy laser. The device has the advantages that the coolingmodule is arranged on the back surface of the diffraction light-splitting element, so that the temperature rise of the diffraction light-splitting element can be effectively controlled, the heat effect of a film system and a substrate is reduced, and the confidence of laser beam quality measurement and energy measurement is greatly improved.
Description
technical field [0001] The invention relates to the field of laser testing, in particular to a high-energy laser beam quality testing method and testing system. Background technique [0002] High-power and high-energy lasers are widely used in national defense, industry, scientific research and other fields. Accurately obtaining the optical parameters of high-energy lasers is of great significance for practical applications, and the quality of laser beams in optical parameters is an important index for evaluating lasers. CCD is the core device for measuring this optical parameter, but the loss threshold of CCD is low. generally in Therefore, when measuring high-energy laser parameters, the main laser must be split to attenuate the energy of the main laser, so as to realize the measurement of weak light parameters to characterize the performance of high-energy lasers. [0003] The existing high-energy laser spectroscopic methods mainly use thin-film spectroscopic, that is...
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Login to View More IPC IPC(8): G01J1/42G01J1/04G01J1/02
CPCG01J1/02G01J1/0407G01J1/4257
Inventor 李敏沈本剑陶汝茂冯曦刘玙黄珊宋华青吴文杰谢亮华李昊坤张春王建军
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS