高能激光能量直接测量技术及其发展趋势

发布时间：2018-05-30 08:00

本文选题：高能激光 + 能量计　；参考：《红外与激光工程》2017年07期

【摘要】：高能激光功率高、能量大,造成激光能量计容易损坏和测量不确定度增加。围绕上述问题对国内外现有的几种高能激光能量直接测量方法进行了比较和归纳,对各种技术的优点和缺点作了深入的分析,在此基础上阐述了高能激光能量直接测量技术的发展趋势。研究表明,提高热交换效率是提升高能激光能量计测量能力最高效的措施,尤其是在采用体吸收模式和强制热交换模式的情况下这种效果更加明显;消除吸收体上温度梯度对吸收体材料比热和温度传感器响应时间的影响是提高被动吸收型高能激光能量计测量准确度的关键,在水流冷却型高能激光能量计和水流直接吸收型高能激光能量计中消除水流相变的影响和控制水流温度场不均匀造成的影响则是保证温度准确测量的关键。目前各种高热交换效率和新体制的测量方法得到快速发展和应用,系统的测量能力和测量准确度大幅提高,为了适应未来长时间测量需求,能量累积型高能激光能量计逐渐被功率平衡型高能激光能量计所替代。
[Abstract]:The laser energy meter is easy to damage and the uncertainty of measurement is increased because of its high power and high energy. Several methods of direct energy measurement of high energy laser at home and abroad are compared and summarized around the above problems, and the advantages and disadvantages of various technologies are analyzed in depth. On this basis, the development trend of direct energy measurement technology of high energy laser is described. The results show that improving the efficiency of heat exchange is the most effective measure to improve the measurement ability of high energy laser energy meter, especially in the case of volume absorption mode and forced heat exchange mode. Eliminating the influence of the temperature gradient on the specific heat of the absorber material and the response time of the temperature sensor is the key to improve the measurement accuracy of the passive absorption high energy laser energy meter. The key to ensure the accurate measurement of temperature is to eliminate the influence of water phase transition and control the influence caused by non-uniformity of flow temperature field in the flow cooling high energy laser energy meter and the flow direct absorption high energy laser energy meter. At present, various measurement methods with high heat exchange efficiency and new system have been rapidly developed and applied, and the measurement capability and accuracy of the system have been greatly improved, in order to meet the needs of the long time measurement in the future, The energy accumulative high energy laser energy meter is gradually replaced by the power balance high energy laser energy meter.
【作者单位】：中国工程物理研究院应用电子学研究所;清华大学精密计量与仪器科学国家重点实验室;
【基金】：国家高技术研究发展计划(2014AAxxx2027)
【分类号】：TN249

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