SAMOP 2021 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 3: Photonics and Laser Development
Q 3.10: Poster
Montag, 20. September 2021, 16:30–18:30, P
Terahertz spectroscopy with undetected photons — •Mirco Kutas1,2, Björn Haase1,2, Jens Klier1, Georg von Freymann1,2, and Daniel Molter1 — 1Center for Materials Characterization and Testing, Fraunhofer ITWM, Kaiserslautern, Germany — 2Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern (TUK), Germany
Terahertz technology has proven its applicability to scientific and industrial tasks, but generation and detection of terahertz waves is often still technically complex. New quantum optical concepts provide highly attractive alternatives for the access to this spectral range. By using nonlinear interferometry, it is possible to transfer the photon properties after interaction with the sample to visible photons. As a result, the detection can be realized by widely available and highly developed CMOS sensors without the need of cooling or expensive pulsed lasers. We report on the demonstration of spectroscopy in the terahertz frequency range measuring absorption features of chemicals by only detecting visible photons [1].
[1] Kutas et al., Optica 8(4), 438-441 (2021)