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Terahertz Techniques pp 247–300Cite as

Spectroscopic Methods

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Part of the book series: Springer Series in Optical Sciences ((SSOS,volume 151))

Abstract

Historically, there have been eras where a particular spectroscopic method has dominated IR and THz research. At the end of the nineteenth century and into the early twentieth century, prisms were employed, with the alternatives being wire transmission gratings, or interferometers when only simple spectra were involved (Sect. 1.2). This situation changed with the introduction of the very efficient blazed reflection grating in 1910, which had the ability to concentrate a large percentage of the light into a single order [15]. For the next fifty years, grating spectroscopy was the dominant technique at frequencies below the range covered by prisms. The next change occurred with the availability of digital computers from the late 1950s onward. This allowed interpretation of the complex signals produced by interferometers when many frequencies were involved. Interferometers have inherent advantages compared to dispersive systems, and became the primary tool for routine spectroscopy. Time-domain spectroscopic systems, and an increasing number of narrow-band tunable sources, are now supplementing conventional spectroscopic methods in an increasing number of applications.

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Authors and Affiliations

  1. Shizuoka University, Hamamatsu, Japan

    Dr. Erik Bründermann (Honorable Guest Professor)

  2. Ruhr-Universität Bochum, NC 7 Rm 68 Universitätsstraße 150, 44801, Bochum, Germany

    Dr. Erik Bründermann (Honorable Guest Professor)

  3. Institut für Optik und Atomare Physik, Technische Universität Berlin, Berlin, Germany

    Professor Dr. Heinz-Wilhelm Hübers

  4. Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt e.V., Rutherfordstr. 2, 12489, Berlin, Germany

    Professor Dr. Heinz-Wilhelm Hübers

  5. Physics Centre, University of Essex, Wivenhoe Park, Colchester, C04 3SQ, UK

    Professor Dr. Maurice F. Kimmitt

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Bründermann, E., Hübers, HW., Kimmitt, M.F. (2012). Spectroscopic Methods. In: Terahertz Techniques. Springer Series in Optical Sciences, vol 151. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02592-1_6

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