Abstract

A beam-folding technique in optical interferometry, where the number of beam folds used can be very large, is reported. This technique can be used as a low-cost position-tracking method in a Fourier transform spectrometer (FTS) to cover the broad spectral range from UV to IR. The main advantage gained is the simple position-tracking algorithm used in sampling the interferogram. We have developed a UV–visible FTS, whose wavelength coverage is limited only by the optical elements (350nm1μm with off-the-shelf components). Preliminary results show that it can achieve a resolution of 4cm1 even with a ball-bearing translation stage.

© 2006 Optical Society of America

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