Abstract
A system for automating ellipsometric measurements on the basis of a cryogenic spectral null-ellipsometer is described. Three step motors imitating a manual method are used as actuators. A digital voltmeter serves as a measuring device. The system operates under the control of a computer and contains a minimal number of nonstandard parts. The accuracy characteristics of the ellipsometer are improved due to algorithmic methods: an adaptive method used to seek zero makes it possible to eliminate fluctuation errors by time averaging. The automation system described is a fairly universal means of communication between a computer and an experimental setup and can be applied in other physical experiments.
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Galuza, A.A., Kudlenko, A.D., Slatin, K.A. et al. A System for the Automation of a Cryogenic Spectral Ellipsometer. Instruments and Experimental Techniques 46, 477–479 (2003). https://doi.org/10.1023/A:1025121813267
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DOI: https://doi.org/10.1023/A:1025121813267