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High-resolution spectrometer using combined dispersive and interferometric wavelength separation for raman and laser-induced Breakdown Spectroscopy (LIBS)

  • 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 (Delta lambda < 0.5 nm), while perpendicular to that direction an etalon provides high spectral resolution (Delta lambda < 50 pm). This concept for two-dimensional spectroscopy has been implemented for the wavelength range lambda = 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.

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Author details:Daniel RiebeORCiDGND, Toralf BeitzORCiD, Carsten DoscheGND, Hans-Gerd LöhmannsröbenORCiDGND, Volker Raab, Corinna Raab, Matthias Unverzagt
Pubmed ID:http://www.ncbi.nlm.nih.gov/pubmed?term=25226257
Title of parent work (English):Applied spectroscopy : an international journal of spectroscopy ; official publication of the Society for Applied Spectroscopy
Publisher:Society for Applied Spectroscopy
Place of publishing:Frederick
Publication type:Article
Year of first publication:2014
Completion year:2014
Release date:2017/03/27
Tag:Fabry-Perot etalon; High-resolution spectrometer; LIBS; Laser-induced breakdown spectroscopy; Raman spectroscopy
Number of pages:9
First page:1030
Last Page:1038
Funding institution:German Federal Ministry for Economic Affairs and Energy (BMWi) through AiF [KF2167702FK9]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Peer review:Referiert