Temperature Measurement Precision for Small Laser-processed Region

The effects of many factors on the measurement precision in radiometric pyrometer have been analyzed.The theoretical results show that stray light and the photosensitive area of the detector mainly influence precision of radiometric pyrometer in aberration correction system.So,a single-mode fiber pigtailed detector which can restrict stray light and reduce receiving surface area is used to substitute for original detector.Experimental results show that this method is feasible and meets the demand of the radiometric temperature measurement of small region.