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Optical transmission of a moving Fabry-Perot interferometer

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posted on 2023-12-13, 17:00 authored by Nazar Pyvovar, Lingze Duan
Fabry-Perot interferometers have been widely studied and used for well over a century. However, they have always been treated as stationary devices in the past. In this paper, we investigate the optical transmission of a longitudinally moving Fabry-Perot interferometer within the framework of relativity and establish a general relation between the transmission coefficient and the velocity for uniform motions. Several features of the transmission spectrum are analyzed, including velocity-dependent frequency rescaling, the Fabry-Perot transmittance, and the transmission phase near resonance. Special attentions are given to the non-relativistic regime, where application prospects are evaluated. Potential new interferometric schemes, such as velocity-scanning interferometry and hybrid interferometers based on nested configurations, are proposed. Finally, a special case of non-uniform motion is also investigated.

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