一种靶材表面激光辐照功率的间接测量方法  

An indirect measuring method for laser power on target surface

作　　者：汪彬 李恒年[1] 谢石林[2] 王奥 WANG Bin;LI Heng-nian;XIE Shi-lin;WANG Ao(State Key Laboratory of Astronautic Dynamics,Xi′an Satellite Control Center,Xi′an 710043,China;Department of Aerospace,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]西安卫星测控中心宇航动力学国家重点实验室,陕西西安710043 [2]西安交通大学航天航空学院,陕西西安710049

出　　处：《激光与红外》2022年第3期343-348,共6页Laser & Infrared

摘　　要：现有的激光功率测量技术难以满足高能激光器到靶功率的测量需求。本文提出了一种基于埋入式FBG(光纤布拉格光栅)传感的靶材表面激光辐照功率间接测量方法。利用两个埋入式FBG传感器实现对靶材内不同深度处温度变化的精确测量,通过对两个FBG传感器测得的温度差进行函数拟合,即可求得靶材表面的激光辐照功率。仿真结果表明,本文所提方法能够有效、精确、不受波长和功率水平限制的间接测得靶材表面的辐照功率。The present measure technologies of laser power is is difficult to meet the measurement requirements of the superficial power of targets produced by high energy laser device.An indirect method embedded FBG(fiber Bragg grating)sensors for measuring the superficial power on targets produced by high energy laser is proposed in this paper.Two FBG sensors are embedded in different depths of the target,to realize accurate measurement of temperature changes at different depths within the target.By curve-fitting the temperature difference of the two FBG sensors,the superficial power of targets produced by high energy laser can be measured indirectly.The result of simulations indicates that the proposed method in this paper is effective and accurate,and can indirectly measure the superficial power of targets produced by high energy laser,which is not limited by wavelength and power-level.

关 键 词：高能激光 到靶功率 间接测量 FBG传感器 埋入式 

分 类 号：TN249[电子电信—物理电子学]