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Conferences > FTS > 2011 > FWA > FWA4

Low Cost “Laserless” FTIR Spectrometer with Resolution Better Than 0.5 cm−1

Karl Henrik Haugholt, Matthieu Lacolle, Kari Anne Bakke, Jon Tschudi, Atle Honne, and Olav Storstrøm

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Abstract

We have designed a FTIR instrument where the traditional He-Ne reference laser is replaced by a low-cost linear encoder. We achieve an RMS sampling error of less than 50nm by oversampling both the interferogram and the encoder signal and then resampling the interferogram using a correction table for the encoder.

© 2011 Optical Society of America

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