脉冲激光器的结构设计与仿真.zip

毕业设计报告(论文)
报告(论文)题目:脉冲激光器的结构设计与仿真
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作者所在专业:
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作者姓名:张凯伟
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完成时间:
北华航天工业学院教务处制
摘要
光纤激光器是以传输光纤为介质,掺杂稀土元素活性离子作为介质而构成的一类激光器,是一种新型高性能全固态激光器,具备输出光束质量好、转换效率高、散热好、可靠性高、易于集成等明显优点,目前,成为全面提升现有传统激光器功能和掀起激光产业技术改革的先锋和领航者,在诸多领域具备广泛使用前景。
本文主要对100W脉冲激光器结构和激光器温度控制的研究,应用于激光清洗、激光加工系统、激光损伤系统,采用叠板结构设计,即光路和电路,电路模块外接24V恒流源接口,使用DB25针接口与计算机通信,光路模块通过高稳定度窄脉宽调Q脉冲种子源,经两级放大空间,达到100W脉冲输出。
具体工作内容如下:
首先,分析脉冲激光器的设计组成和工作原理,对不同的产热部位、产热机理和热分布规律研讨,选用风扇冷却方式。
其次,在三维绘图软件Pro/E中建立结构的模型及装配,在Ansys workbench中导入模型,建立模态分析、网格划分,进行热仿真和振动仿真,分析风冷的散热效果。
最后,对仿真结果进行记录,比对元器件最高承受的温度,以及光纤盘安全工作的温度,真实反映散热措施的散热效果。
关键词:脉冲激光器结构有限元热仿真振动分析
Abstract
Fiber laser based on optical fiber as medium, reactive ion doping rare earth elements as working medium, and form a kind of laser is a new type of high-performance, solid-state laser has good output beam quality, high conversion efficiency, good heat dissipation effect, high reliability and easy system integration etc. At present, has e prehensive upgrade the existing traditional laser performance and lifted the pioneer and leader of laser industry technical transformation, with wide application prospect in many fields.
In this paper, the main structure of 100W pulse laser and laser temperature control research, applied in laser cleaning, laser processing, laser damage system, uses the laminated structure design, the optical path and electric circuit, external interface 24 v constant current source circuit module,use DB25 needle interface with munications, optical path module using a high stability narrow pulse width tuning Q seed source, amplified by two levels of space,reaching 100 w pulse output.
The details are as follows:
First of all, the analysis of design and working principle of pulsed laser,heat production of different parts for heat production mechanism and heat distribution, choose fan cooling mode.
Second,in the 3D drawing software Pro/E establish the structure of the model and assembly, import the model in the Ansys work