Chinese Journal of Lasers, Volume. 10, Issue 10, 745(1983)
[in Chinese]
A laser power meter having a mirror of 120°big cone angle and a long absorbtion cylinder is described. It has two sets of symmetrical structures for photo-thermal conversion and electrical calibration. The measurement range is 30-1000 w with an accuracy of ±5%.
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[in Chinese]. [J]. Chinese Journal of Lasers, 1983, 10(10): 745