【摘要】 提出基于微机电系统微变形镜(MEMS-DMs)的动态补偿激光二极管泵浦固体激光器(DPL)热透镜效应,能够使其在获得较小体积和功耗、具备灵活性的同时,提高输出功率.通过分析MEMS-DMs的控制理论和实际器件的性质,说明最小二乘控制算法在DPL自适应补偿中不适用的原因,指出最速下降法更适合于DPL自适应补偿,并给出该非线性规划问题的数学模型和数值求解方法.实验结果表明最速下降法相比最小二乘法而言,迭代过程更稳定,DPL输出功率更高.更多还原

【Abstract】 MEMS-DMs(micro-electro-mechanism system deformable mirrors) are proposed to compensate the thermal lensing effects in DPL(diode pumped laser).Thus higher output power,smaller volume,lower power dissipation, and flexibility can be achieved.The control theory of MEMS-DMs and characteristics of a real MEMS-DMs component are analyzed.The reasons why least square method is invalid and steepest descent method is more suitable for DPL adaptive compensate system are disscussed.The mathematical model of such nolinear problem is built and the computational solution process is given.The experimental result shows that the steepest descent method is better than least square method,for its both algorithm stability and high output power of DPL.更多还原