An interferometer with continuously variable bandpass filter

Dariusz Litwin; Kamil Radziak; Jacek Galas

doi:10.1117/12.2610993

26 November 2021 An interferometer with continuously variable bandpass filter

Dariusz Litwin, Kamil Radziak, Jacek Galas

Proceedings Volume 12040, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021; 120400L (2021) https://doi.org/10.1117/12.2610993
Event: Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021 (WILGA 2021), 2021, Warsaw, Poland

Abstract

The paper focuses on a new approach to variable wavelength interferometry. The presented optical configuration includes a continuously variable bandpass filter instead of a continuously tuned light source. In the demonstrated solution sequential recording of images is not necessary. The fringe field analysis utilizes a single image. The solution is suitable for both transmitted and reflected-light modes. The filter can be mounted in different parts of the optical system. In this paper, we demonstrate initial results of measurements of the spectral characteristic of a retarder when the filter is placed in the plane of the field stop in the Kӧhler illumination system. The fast analysis of the single interferogram constitutes the key element of novelty of the system and enables the instrument to be used in industrial environment.

Citation Download Citation

Dariusz Litwin, Kamil Radziak, and Jacek Galas "An interferometer with continuously variable bandpass filter", Proc. SPIE 12040, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2021, 120400L (26 November 2021); https://doi.org/10.1117/12.2610993

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