Ms. Ya Kang Profile

Ya Kang

at Chongqing City Management College

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Proceedings Article | 4 March 2013 Paper

Analysis of sampling error in FTIR

Ya Kang

Proceedings Volume 8761, 87610N (2013) https://doi.org/10.1117/12.2019626

KEYWORDS: Light, Error analysis, FT-IR spectroscopy, Mirrors, Spectroscopy, Beam splitters, Sensors, Infrared spectroscopy, Pulsed laser operation, Computer simulations

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In Fourier transform infrared spectrometer (FTIR), the optical path difference of laser metrology is applied to increase spectrum measure precision. However, due to the characteristics of laser single frequency and steady frequency, the uneven speed of moving mirror, circuit delay etc. cause the deviation of sampling point. In this paper, based on the interference theory of spectrometer, according to the Fourier contrary transform and methods of error analysis, the theory model between relative error of spectrum measure and the deviation of sampling point is established. Some simulation computations of the model have been done, the result indicates that, as a theory basis, the model can be applied in analyzing the sampling error of spectrometer and correction algorithm.

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