Group Delay Dispersion Measurements of Novel Multilayer Interference Coatings in the Mid-Infrared Spectral Regime
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912260475060224 |
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| author | Galander, Ulrich Prinz, Maximilian Perner, Lukas W. Heckl, Oliver H. |
| author_facet | Galander, Ulrich Prinz, Maximilian Perner, Lukas W. Heckl, Oliver H. |
| contents | We present the methods and results for broadband group delay dispersion measurements for all-monocrystalline and amorphous-crystalline hybrid supermirrors, as well as an all-amorphous mirror in the wavelength range from \SIrange{2.5}{4.8}{\micro \metre}. Measurements are performed using a custom-built white light interferometer that allows for balanced and unbalanced measurement configurations. We compare the results to theoretical transfer-matrix method simulations and an alternative measurement using a commercial Fourier-transform infrared spectrometer. Additionally, we investigate group delay dispersion by direct differentiation using a local polynomial smoothing approach (Savitzky-Golay filter) and find strong consistency between our results, the theoretical prediction and the estimation using this method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_03289 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Group Delay Dispersion Measurements of Novel Multilayer Interference Coatings in the Mid-Infrared Spectral Regime Galander, Ulrich Prinz, Maximilian Perner, Lukas W. Heckl, Oliver H. Optics We present the methods and results for broadband group delay dispersion measurements for all-monocrystalline and amorphous-crystalline hybrid supermirrors, as well as an all-amorphous mirror in the wavelength range from \SIrange{2.5}{4.8}{\micro \metre}. Measurements are performed using a custom-built white light interferometer that allows for balanced and unbalanced measurement configurations. We compare the results to theoretical transfer-matrix method simulations and an alternative measurement using a commercial Fourier-transform infrared spectrometer. Additionally, we investigate group delay dispersion by direct differentiation using a local polynomial smoothing approach (Savitzky-Golay filter) and find strong consistency between our results, the theoretical prediction and the estimation using this method. |
| title | Group Delay Dispersion Measurements of Novel Multilayer Interference Coatings in the Mid-Infrared Spectral Regime |
| topic | Optics |
| url | https://arxiv.org/abs/2503.03289 |