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From raw data to processed spectra: A step-by-step guide.

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Title: From raw data to processed spectra: A step-by-step guide.
Authors: Woering, Erik F.1 (AUTHOR), Hildner, Richard1 (AUTHOR) r.m.hildner@rug.nl
Source: American Journal of Physics. May2026, Vol. 94 Issue 5, p380-388. 9p.
Subjects: Absorption spectra, Data conversion, Fluorescence spectroscopy, Scientific computing, Spectrum analysis, Optical spectroscopy
Abstract: Optical spectroscopy is an important and widely used technique, for instance, to characterize new materials and to identify unknown compounds. Spectra are typically reported as a function of the wavelength of light, yet the information extracted from such spectra can be misleading. In contrast, spectra represented as a function of the frequency (or photon energy) allow for a more direct extraction of the intrinsic quantum-mechanical properties of the materials under investigation. Here, we discuss this conversion for absorption, fluorescence, and fluorescence excitation spectra. We show step-by-step the different factors that lead to a rescaling of the measured absorption and fluorescence signals. Editor's Note: A well-known issue in optical spectroscopy is that measurements are typically reported as functions of wavelengths, whereas the physically relevant quantities depend on energy. This paper offers a comprehensive review of how to perform the conversion correctly. As such, it should be extremely useful to both students and educators alike whenever they tackle problems in spectroscopic analysis. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Optical spectroscopy is an important and widely used technique, for instance, to characterize new materials and to identify unknown compounds. Spectra are typically reported as a function of the wavelength of light, yet the information extracted from such spectra can be misleading. In contrast, spectra represented as a function of the frequency (or photon energy) allow for a more direct extraction of the intrinsic quantum-mechanical properties of the materials under investigation. Here, we discuss this conversion for absorption, fluorescence, and fluorescence excitation spectra. We show step-by-step the different factors that lead to a rescaling of the measured absorption and fluorescence signals. Editor's Note: A well-known issue in optical spectroscopy is that measurements are typically reported as functions of wavelengths, whereas the physically relevant quantities depend on energy. This paper offers a comprehensive review of how to perform the conversion correctly. As such, it should be extremely useful to both students and educators alike whenever they tackle problems in spectroscopic analysis. [ABSTRACT FROM AUTHOR]
ISSN:00029505
DOI:10.1119/5.0250104