They are the cavity radiometer and the water flow power meter for laser power measurement, the cone calorimeter and the volume-absorbing calorimeter for laser energy measurement.
有测量激光功率的空腔型辐射计和流水式功率计、测量激光能量的锥型能量计和体吸收型能量计。
Firstly, the laser power was measured by cryogenic radiometer in visible and near infrared spectral regions (488~944 nm), uncertainty of power measurement is less than 0.016%.
首先低温辐射计采用电替代方法测量单个波长激光绝对光功率，测量不确定度低于0.016%。
The results of comparison indicate that the laser power measure uncertainty of cryogenic radiometer of 2003 year is less than that of 1999 year;
结果表明，2003年低温辐射计激光功率测量不确定度比1999年的要小；
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