Year: 2025
Type: article
Abstract: 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 , 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.
Source: Advanced Optical Materials
Institutions: University of Vienna, University of Neuchâtel
Language: English
Subfield: Surfaces, Coatings and Films
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,880
OpenAlex ID: W4415556889