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5 November 2018 Acousto-optical tunable filter for a swept light source with variable transmission function
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Abstract
Spectrally tunable illumination is widely used for colorimetry, spectroscopy, spectral-domain optical coherence tomography and other applications. Most of the swept light sources suffer either from a limited number of spectral channels or from a spatial noise and speckles. In this paper, we discuss an approach based on acousto-optic filtration of wide-band illumination. We show experimentally that acousto-optical tunable filter (AOTF) provides a unique collection of features: arbitrary spectral tuning, multi-bandpass mode and acoustic frequency modulation. It allows assigning a number, positions and width of the spectral channels. Results of multiple experiments show that the proposed technique may become the basis of the swept light sources.
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Alexander S. Machikhin, Demid D. Khokhlov, Vitold E. Pozhar, Alexey B. Kozlov, Vladislav I. Batshev, and Alexey V. Gorevoy "Acousto-optical tunable filter for a swept light source with variable transmission function", Proc. SPIE 10815, Optical Design and Testing VIII, 108150L (5 November 2018); https://doi.org/10.1117/12.2502756
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