Saito T T, Callender A B, Simmons L B
Appl Opt. 1975 Mar 1;14(3):721-5. doi: 10.1364/AO.14.000721.
We have designed, constructed, and tested an instrument to calorimetrically measure the 10.6-microm absorption a of high reflectivity metal-substrate mirrors. Optical, electrical, and thermal design considerations will be discussed. The technique of absorption measurement, including the in situ heat capacities, the reflected laser light to an accuracy of +/-4%, and the simplified data reduction technique will be discussed. From our error analysis we conclude that our accuracy is +/-0.1alpha and has a precision of 0.0005. Comparative measurements on the same mirrors by different reflectivity and absorption devices and extensive absorption data on state-of-the-art 10.6-microm metal-substrate mirrors will be presented. The best absorption that we have measured is 0.0010 for a gold-coated multidielectric enhanced mirror.
我们设计、制造并测试了一种用于量热法测量高反射率金属基底镜10.6微米吸收率α的仪器。将讨论光学、电气和热学设计方面的考虑因素。还将讨论吸收测量技术，包括原位热容量、反射激光的精度达到±4%以及简化的数据处理技术。通过误差分析我们得出结论，我们的精度为±0.1α，精度为0.0005。将展示使用不同反射率和吸收率测量装置对同一镜子进行的对比测量结果，以及关于先进的10.6微米金属基底镜的大量吸收数据。我们测量到的金涂层多层介质增强镜的最佳吸收率为0.0010。
