Kück Stefan, Brandt Friedhelm, Kremling Hans-Albert, Gottwald Alexander, Hoehl Arne, Richter Mathias
Physikalisch-Technische Bundesanstalt, Braunschweig, Germany.
Appl Opt. 2006 May 10;45(14):3325-30. doi: 10.1364/ao.45.003325.
We report a comparison of laser power measurements at the F2-laser wavelength of 157 nm made at two facilities of the Physikalisch-Technische Bundesanstalt (PTB), the German national metrology institute. At the PTB laboratory at the electron storage ring BESSY II in Berlin, the scale for laser power was directly traced to a cryogenic radiometer operating at 157 nm, whereas at the PTB laser radiometry facility in Braunschweig the calibration of transfer detectors was performed with a newly developed standard for laser power at 157 nm, which is traceable in several steps to a cryogenic radiometer operating at 633 nm. The comparison was performed under vacuum conditions with laser pulse energies of approximately 10 microJ, however with different average powers because different primary standard radiometers were used. The relative deviation for the responsivity of the transfer detector was 4.8% and thus within the combined standard uncertainty.
我们报告了在德国国家计量机构物理技术联邦研究所（PTB）的两个实验室对157纳米F2激光波长的激光功率测量结果的比较。在位于柏林的电子储存环BESSY II的PTB实验室，激光功率的测量尺度直接溯源至一台工作在157纳米的低温辐射计，而在不伦瑞克的PTB激光辐射测量设施中，传递探测器的校准是使用一种新开发的157纳米激光功率标准进行的，该标准经过多个步骤可溯源至一台工作在633纳米的低温辐射计。比较是在真空条件下进行的，激光脉冲能量约为10微焦，但由于使用了不同的原级标准辐射计，平均功率不同。传递探测器响应度的相对偏差为4.8%，因此在合成标准不确定度范围内。
