Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume 33, Issue 7, Pages 1415-1420Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAA.33.001415
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Funding
- European Research Council (ERC) [291198, 648615, 665635]
- Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF) [PBZHP2_143444]
- European Research Council (ERC) [665635] Funding Source: European Research Council (ERC)
- Swiss National Science Foundation (SNF) [PBZHP2_143444] Funding Source: Swiss National Science Foundation (SNF)
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We introduce a spectrometer capable of measuring sample absorption spectra in the visible regime, based on a time-domain scanning Fourier transform (FT) approach. While infrared FT spectrometers typically employ a Michelson interferometer to create the two delayed light replicas, the proposed apparatus exploits a compact common-mode passive interferometer that relies on the use of birefringent wedges. This ensures excellent path-length stability (similar to lambda/300) and accuracy, with no need for active feedback or beam tracking. We demonstrate the robustness of the technique measuring the transmission spectrum of a colored bandpass filter over one octave of bandwidth and compare the results with those obtained with a commercial spectrophotometer. (C) 2016 Optical Society of America
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