【作者】 刘婷婷；

【导师】 高杨；

【作者基本信息】 西南科技大学 ， 控制理论与控制工程， 2006， 硕士

【摘要】 二极管泵浦固态激光器(简称DPSSL)是90年代发展起来的一种新型激光器，具有效率高、光束质量好、结构紧凑和寿命长等优点。随着激光二极管(DL)列阵输出功率的提高，热效应成为制约高功率DL发展的关键技术之一。而固态激光器中的热效应会造成两个后果：热应力导致工作介质破坏，从而限制了激光器的输出平均功率；畸变导致激光光束质量下降，使输出激光的亮度降低。所以激光二极管列阵以及其它高功率密度器件如微波功放、高性能CPU等，都存在热管理问题，因此热管理问题也成为目前研究热点之一。 基于MEMS技术的Ⅴ型微通道冷却器具有低热阻、低流量，高效率以及体积小等特点，能够对激光二极管列阵以及其它高功率密度器件进行快速、高效地散热，成为一种新型的散热方案。本文对用于DL列阵组装的Ⅴ型微通道冷却器中的核心部件Ⅴ型微通道热沉进行了研究。 Ⅴ型微通道热沉结构复杂，是一个不规则体，所以对其进行理论分析时，遇到很多困难。由于矩形微通道的理论分析比较成熟，所以最终采用了将Ⅴ型微通道热沉划分为多个矩形微通道的方法进行理论研究。虽然引入了大量的假设条件，但仍不失为一种针对此类复杂问题简化的有效分析方法。 研究过程中采用了数值仿真的方法调研了Ⅴ型微通道的几何结构参数和边界条件对微通道散热性能的影响。仿真结果表明，流速、入口长度、微通道宽度对Ⅴ型微通道热沉的散热性能影响较大。 利用项目组研制的Ⅴ型微通道热沉样品，模拟热源加载，进行了测试热沉散热性能的实验。对比实验数据与仿真结果，结果吻合，证明了仿真结果的有效性。 最后，对Ⅴ型微通道热沉进行了可制造性设计(DFM)，将工艺约束条件与结构参数设计结合在一起，提高了Ⅴ型微通道热沉的可制造性，降低制造成本。更多还原

【Abstract】 Diode pumped solid state laser (DPSSL) developed in the 1990s is a new type of laser. DPL has the advantages of high efficiency, high light beam quality, tight structure and long life. With the improvement of the output power of the diode laser arrays, heat effect has become one of the key technologies which have restricted the development of high power density DL. Heat effect in solid lasers will cause two consequences: one is that thermal stress causes the actuating medium to destroy and limits the laser output average power; the other is that distortion causes the laser light beam drop in quality and the output laser brightness to reduce. So heat management is presented in diode laser array and other high power density devices such as microwave power amplifier and high performance CPU. Heat management becomes one of hot spots in present research. The V-shaped microchannel based on MEMS technology has the advantages of low thermal resistance, low flow quantity, high efficiency and small volume. This cooling scheme can dissipate heat from diode laser array and other high power density devices quickly and effectively. V-shaped microchannel has become a new type cooling scheme.The structure of V-shaped microchannel heat sink is extremely complex and irregular. Many difficulties were encountered during the process of theoretical analysis. By reason of the fact that theoretical analysis of rectangle is quite mature, the method of divided V-shaped microchannel into many rectangle microchannel is adopted at last. Although this method has introduced a large amount of assumed conditions, it is still one kind of research methods which makes the complex question become simple.Numerical simulation is adopted to investigate the influence of geometry parameter and boundary condition on cooling performance. The simulation results show that the influence of fluid velocity, inlet size and microchannel width is更多还原