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Kirchner, Friedrich O.; Lahme, Stefan; Riedle, Eberhard ORCID logoORCID: https://orcid.org/0000-0002-2672-5718 and Baum, Peter (2014): All-reflective UV-VIS-NIR transmission and fluorescence spectrometer for mu m-sized samples. In: AIP Advances, Vol. 4, No. 7, 077134 [PDF, 2MB]

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We report on an optical transmission spectrometer optimized for tiny samples. The setup is based on all-reflective parabolic optics and delivers broadband operation from 215 to 1030 nm. A fiber-coupled light source is used for illumination and a fiber-coupled miniature spectrometer for detection. The diameter of the probed area is less than 200 mu m for all wavelengths. We demonstrate the capability to record transmission, absorption, reflection, fluorescence and refractive indices of tiny and ultrathin sample flakes with this versatile device. The performance is validated with a solid state wavelength standard and with dye solutions.

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