A method for evaluating the melting point quality of high-power fiber laser
A fiber laser, high-power technology, applied in the direction of testing optical performance, design optimization/simulation, calculation, etc., can solve the problems of laser damage, unable to evaluate the maximum power of the melting point of fiber laser, endangering the safe operation of the laser, etc.
Active Publication Date: 2021-10-26
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
At the melting point, a small part of the laser energy will be converted into heat load, causing the temperature at the melting point to be too high, which will endanger the safe operation of the laser
Therefore, from the perspective of safe operation of the laser, more attention should be paid to the ratio of the melting point to the conversion of laser energy into heat load. However, in practical applications, the heat source at the melting point is difficult to measure accurately, which hinders the establishment of the melting point temperature model and the evaluation of the melting point welding quality. At present, there is no reliable method to quantitatively evaluate the welding quality of the melting point, which makes it impossible to evaluate the maximum power that the melting point of the fiber laser can withstand, which may easily cause damage to the laser during high-power operation
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[0066] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0067] The method for evaluating the melting point quality of high-power fiber lasers provided by this application can be applied to such as figure 1 shown in the application environment. Among them, the terminal implements a method for evaluating the melting point quality of high-power fiber lasers. By establishing the melting point temperature rise model of optical fibers according to the model parameters of high-power fiber lasers, by setting different pump powers in the pre-built fiber core temperature measurement platform, Obtain multiple sets of corresponding measu...
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Abstract
This application relates to a method for evaluating the melting point quality of high-power fiber lasers. The method includes: establishing the melting point temperature rise model of the optical fiber according to the model parameters of the high-power fiber laser, and setting different pump powers in the pre-built fiber core temperature measurement platform to obtain multiple sets of corresponding melting point temperatures and signal optical power The measured value of the melting point is solved to solve the temperature rise model of the melting point, and multiple sets of calculated data about the melting point temperature and the melting point signal optical power are obtained. , used to evaluate the melting point quality of optical fiber. The invention describes the temperature characteristics of the melting point and reflects the welding quality of the melting point through the thermal factor, realizes the quantitative evaluation of the welding quality of the melting point, and provides theoretical and experimental means for the analysis of the melting point temperature and the reliability research and judgment of the high-power fiber laser when the power is further increased.
Description
technical field [0001] The present application relates to the technical field of fiber lasers, in particular to a method for evaluating the melting point quality of high-power fiber lasers. Background technique [0002] The welding quality of the melting point has a great influence on the overall performance of the high-power laser, and is the weak link in the stable operation of the laser. The melting point loss of good welding quality is small, and the temperature rise is small during the high-power operation of the laser, so the laser is not easy to be damaged, while the melting point of poor welding quality is prone to high temperature rise, and the laser is prone to fusing during high-power operation. At present, some studies have been carried out on the quality of the melting point, but these studies mainly focus on the influence of splice offset on high-order modes and beam quality, and a small amount of research focuses on the splice loss of the fiber core. This typ...
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IPC IPC(8): G06F30/20G01M11/02G06F119/08
CPCG01M11/02G06F30/20G06F2119/08
Inventor 韩凯娄兆凯崔文达许晓军马鹏飞奚小明史尘
Owner NAT UNIV OF DEFENSE TECH