Group Delay Dispersion Measurements on Mid-Infrared Supermirrors

Autor(en)

Ulrich Galander, Maximilian Prinz, Lukas W. Perner, Oliver H. Heckl

Abstrakt

Methods and results for broadband group delay dispersion measurements of monocrystalline and amorphous-crystalline hybrid supermirrors, as well as an all-amorphous mirror, are presented. Measurements are performed with a custom-built white light interferometer covering a spectral range from 2.5 to 4.8 (Formula presented.), capable of measuring in both balanced and unbalanced measurement configuration. The results are compared with theoretical transfer-matrix method simulations and an independent measurement using a commercial Fourier-transform infrared spectrometer. Additionally, group delay dispersion is investigated by direct differentiation using a local polynomial smoothing approach (Savitzky-Golay filter), and strong consistency is observed between the measurement results, the theoretical prediction, and the estimation using this method.

Organisation(en)

Fakultätszentrum für Nanostrukturforschung

Externe Organisation(en)

Université de Neuchâtel

Journal

Advanced Optical Materials

ISSN

2195-1071

DOI

https://doi.org/10.1002/adom.202500727

Publikationsdatum

10-2025

Peer-reviewed

Ja

ÖFOS 2012

210002 Nanobiotechnologie

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/081d9eca-0e40-4642-89eb-10ff16938dc8