确定激光与物质能量耦合系数的非线性规划方法

Method for nonlinear programming to determine laser-matter thermal coupling coefficient

热耦合系数在激光与物质相互作用中扮演着重要的角色。引入非线性规划方法,根据测量到的靶材某一表面的温度历史曲线构造非线性规划模型,通过对非线性规划问题的求解确定随温度变化的热耦合系数。并利用此方法给出了某种材料的热耦合系数随温度的变化关系,曲线常温点(300 K)对应的热耦合系数与光谱扫描仪测量的结果基本一致,表明这种思想方法是有效的。

Thermal coupling coefficient plays an important role in laser interaction with matter. Nonlinear programming is applied to determine laser-matter thermal coupling coefficient which varies with temperature, on the basis of experimental temperature history of certain surface of the material. Thermal coupling coefficient of certain material is determined with this method, at normal temperature （300 K） . The optimization result is consistent with the result by spectrum scanner.It indicates that the method is effective.