Scanning Fourier transform spectrometer in the visible range based on birefringent wedges

作者：Oriana Aurelio; Rehault Julien; Preda Fabrizio; Polli Dario; Cerullo Giulio^*

来源：Journal of the Optical Society of America A-Optics Image Science and Vision, 2016, 33(7): 1415-1420.

DOI：10.1364/JOSAA.33.001415

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.

• 出版日期2016-7-1