中国激光, 2012, 39 (s1): s108009, 网络出版: 2012-05-28
强激光能量测量的电校准技术
Electrical Calibration of High Intensity Laser Energy′s Measuring
激光技术 强激光 能量测量 体吸收 电校准 热电堆 laser technique high intensity laser energy measuring volume absorbing electrical calibration thermopile
摘要
随着惯性约束聚变(ICF)激光驱动器的发展,激光光束口径逐渐增加,需要对大口径激光的能量进行精确测量.而目前国内ICF大口径激光能量测量的校准方式无法满足ICF激光装置功率平衡测量的精度要求(测量不确定度不大于2%)。为解决此问题,提出了一种新型的电校准技术,以Bi2Te3-Sb2Te3构成的半导体热电堆作为能量转换器件,进行了以电能量替代激光能量来实现对体吸收型激光能量计的校准技术研究,初步完成了光能量测量和电能校准的理论模型。理论分析结果表明,在室温环境下,使用电加热校准和激光加热校准在热力学上具有等效性,并通过初步的实验,论证了电加热校准技术应用的可行性。
Abstract
As the development of inertial confinement fusion (ICF) driver, the aperture of laser beam increases gradually, and the energy need to be measured precisely. However, the present calibration method doesn′t satisfy the measuring precision degree (with uncertainty not greater than 2%). A new electrical calibration method of high intensity laser calorimeters is presented. Semiconductors consisting of Bi2Te3-Sb2Te3 are used as energy converting devices. Research on calorimeters′ calibration which uses electrical energy to substitute the laser energy has been done. Thermal model of volume-absorbing glass under pulsed-laser heating and electrical heating has been developed. Results show that, electrical heating and laser heating are equivalent in ambient thermodynamics models. Some experimental results have been obtained, which demonstrate the feasibility of the electrical heating′s application.
唐菱, 王超, 刘华, 陈骥, 党钊, 彭志涛, 胡东霞, 代万俊, 李小群. 强激光能量测量的电校准技术[J]. 中国激光, 2012, 39(s1): s108009. Tang Ling, Wang Chao, Liu Hua, Chen Ji, Dang Zhao, Peng Zhitao, Hu Dongxia, Dai Wanjun, Li Xiaoqun. Electrical Calibration of High Intensity Laser Energy′s Measuring[J]. Chinese Journal of Lasers, 2012, 39(s1): s108009.