title: High-resolution spectrometer using combined dispersive and interferometric wavelength separation for raman and laser-induced breakdown spectroscopy (LIBS).
abstract: In this paper the concept of a compact high-resolution spectrometer based on the combination of dispersive and interferometric elements is presented. Dispersive elements are used to spectrally resolve the light in one direction with coarse resolution (Δλ < 0.5 nm), while perpendicular to that direction an etalon provides high spectral resolution (Δλ < 50 pm). This concept for two-dimensional spectroscopy has been implemented for the wavelength range λ = 350-650 nm. Appropriate algorithms for reconstructing spectra from the two-dimensional raw data and for wavelength calibration were established in an analysis software. Potential applications for this new spectrometer are Raman and laser-induced breakdown spectroscopy (LIBS). Resolutions down to 28 pm (routinely 54 pm) could be realized for these applications.
authors.affiliation: Physical Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: Riebe
authors.forename: Toralf
authors.initials: T
authors.lastname: Beitz
authors.forename: Carsten
authors.initials: C
authors.lastname: Dosche
authors.forename: Hans-Gerd
authors.initials: HG
authors.lastname: Löhmannsröben
authors.forename: Volker
authors.initials: V
authors.lastname: Raab
authors.forename: Corinna
authors.initials: C
authors.lastname: Raab
authors.forename: Matthias
authors.initials: M
authors.lastname: Unverzagt