The cryogenic deuterium-tritium targets are very important to laser inertial confinement fusion, and mainly adopts plastics capsule, Be shell, foam shell etc.

低温冷冻氘氚靶对于惯性约束聚变研究至关重要，主要有塑料微球靶、金属铍球靶、泡沫球壳靶等。

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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%。

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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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