RT Journal Article
T1 Spectrally resolved white light interferometer for measuring dispersion in the visible and near infrared range
A1 Arosa Lobato, Yago
A1 López Lago, María Elena
A1 Fuente Carballo, Raúl de la
K1 Wide spectrum
K1 Refractive index
K1 Chromatic dispersion
K1 Interferometry
AB We design a spectrally resolved interferometer to measure the refractive index of transparent samples over a broad spectral range of 400–1550 nm. The measuring device consists of a Michelson interferometer whose output is analysed by means of three fibre spectrometers: a homemade prism spectrometer which obtains the interferogram generated by the sample in the 400–1050 nm range, a homemade transmission grating spectrometer that measures the interferogram in the 950–1550 nm near infrared range, and a commercial Czerny-Turner spectrometer used to make high-precision measurements of the displacement between the Michelson mirrors. The whole system is illuminated by a white-light source with an emission spectrum similar to that of a black body. We test the instrument on solid and liquid samples achieving accuracy of up to 10−4 in the refractive index after fitting it with the Cauchy formula.
PB Elsevier
SN 0263-2241
YR 2018
FD 2018-07
LK http://hdl.handle.net/10347/32132
UL http://hdl.handle.net/10347/32132
LA eng
NO Yago Arosa, Elena López-Lago, Raúl de la Fuente, Spectrally resolved white light interferometer for measuring dispersion in the visible and near infrared range, Measurement, Volume 122, 2018, Pages 6-13, https://doi.org/10.1016/j.measurement.2018.03.012.
NO Ministerio de Economía y Competitividad – Spain (MINECO) (MAT2014-57943-C3-2-P); Xunta de Galicia and ERDF (AGRU 2015/11 and GRC ED431C 2016/001).
DS Minerva
RD 27 abr 2026