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Calibration of a Low Temperature Cable-Less Lightpipe Pyrometer on the NIST Post-Exposure Bake Test Bed



Benjamin K. Tsai, Kenneth G. Kreider, William A. Kimes


The advent of the cable-less lightpipe radiation thermometer (CLRT) has resulted in a significant improvement in the accuracy of lightpipe radiation thermometer calibrations and measurements. CLRT systems show great promise in noncontact measurements by the elimination of the uncertainties caused by the long fiber optic cables and their connections and by the extension of the spectral range to handle low temperature applications down to room temperature. A CLRT was first calibrated with the oil bath and water bath blackbody sources from 40 C to 180 C. Then the CLRT was compared to thin-film thermocouples and platinum resistance thermometers on a silicon wafer heated in a Post-Exposure Bake test bed. Comparison of the CLRT with both the blackbody and thermocouple standards provides confidence in using CLRTs and allows researchers to continue research in improving the accuracy and feasibility of applying CLRTs in semiconductor processing.
Proceedings Title
Conference Dates
October 5-7, 2005
Conference Title
IEEE International Conference on Advanced Thermal Processing of Semiconductors


blackbody, cable-less lighpipe, calibration, lightpipe radiation thermometer, platinum resistance thermometer, post-exposure bake processing, radiation thermometer, silicon wafer, thin-film thermocouple


Tsai, B. , Kreider, K. and Kimes, W. (2005), Calibration of a Low Temperature Cable-Less Lightpipe Pyrometer on the NIST Post-Exposure Bake Test Bed, 13th, [online], (Accessed June 24, 2024)


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Created October 5, 2005, Updated February 17, 2017