Nonlinear interferometers based on spontaneous parametric down-conversion for Fourier-transform mid-infrared spectroscopy

Abstract: The interference effects of correlated photon pairs inside nonlinear interferometers allow measurements with undetected photons. One application of these effects is mid-infrared spectroscopy with visible or near-infrared light detection. In this work, the concept of classical Fourier-transform infrared spectroscopy is adapted to nonlinear interferometers based on induced coherence. The mid-infrared spectrum and its modification by a spectroscopic sample can then be obtained from a Fourier-transform analysis of the detected visible or near-infrared interferogram. This newly developed measurement approach allows improving the spectral resolution and accuracy of nonlinear interferometers – for the first time, rotational-line-resolving spectroscopy with undetected photons is demonstrated. In addition, this work aims at a thorough understanding of the physical properties and effects of the correlated photon source and the nonlinear interferometer

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Universität Freiburg, Dissertation, 2022

Classification and Topics

• Keyword: Infrared spectroscopy ; Interferometers ; Parametrische Fluoreszenz ; FT-IR-Spektroskopie ; Quantenoptik ; Nichtlineare Optik ; Infrarotspektroskopie

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2022
• Creator: Lindner, Chiara
• Contributor: Kühnemann, Frank ; Kühnemann, Frank ; Schätz, Tobias ; Albert-Ludwigs-Universität Freiburg. Fakultät für Mathematik und Physik ; Fraunhofer-Institut für Physikalische Meßtechnik

Further information

• DOI: 10.6094/UNIFR/228229
• URN: urn:nbn:de:bsz:25-freidok-2282295
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 25.03.2025, 1:46 PM CET