Design method of lasers

Abstract

The invention relates to the technical field of lasers, and particularly discloses a design method of lasers. The design method comprises the following steps: analyzing a gas path system of a laser, and simplifying the parts with different flow velocity characteristics into independent geometric models, and establishing a control equation according to different physical model characteristics; building a calculation model according to the established control equation and the tested boundary condition, calculating repeatedly to obtain a reasonable flow field; testing a boundary condition of a dispersed phase, selecting a suitable dispersed phase calculation module and performing dispersed phase calculation; predicting the motion curves of particles according to the calculated dispersed phase calculation result and optimizing a design scheme of the gas path system of the laser. According to the design method of the lasers provided by the invention, a computational fluid dynamics technology is applied to the design field of gas lasers gradually; besides, the design scheme is optimized, which is beneficial to accelerating the design cycle and reducing the design cost.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a design method of a laser. Background technique [0002] When a carbon dioxide laser is working, carbon dioxide, nitrogen and helium must be mixed in a certain proportion and then passed into the inner cavity of the laser. Under the excitation of a high-energy electric field, electro-optic conversion occurs to generate laser light. The working gas needs to move at high speed in the cavity driven by high-speed fans, such as turbo blowers, Roots pumps and other equipment. Due to the purity of the working gas itself, the cleanliness of the gas transportation pipeline and devices, and the operation during installation, there are more or less dust particles in the working gas in the cavity. Part of the dust particles in the cavity will be converted into harmful gas that is harmful to the operation of the laser due to the action of the electric field or laser, or directly adsorbed on...

AI Technical Summary

Problems solved by technology

Part of the dust particles in the cavity will be converted into harmful gas that is harmful to the operation of the laser due to the action of the electric field or laser, or directly adsorbed on the surface of the optical device, increasing the absorption coefficient of the optical device for the laser, causing the temperature of the optical device to rise and cause thermal deformation Or thermal damage, the more serious large particles directly hit the surface of the optical device while moving with the high-speed airflow in the cavity, causing direct rupture of the optical device

[0003] At present, some research institutions have announced some methods to solve the above problems, but the methods to solve the problems are still in the stage of completely relying on the designer's experience and trial and error. This method has a long design cycle and consumes a lot of money.

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