Near perfect focusing through multimode fibres

0557106 - ÚPT 2023 RIV US eng J - Článek v odborném periodiku
Gomes, A. D. - Turtaev, S. - Du, Y. - Čižmár, Tomáš
Near perfect focusing through multimode fibres.
Optics Express. Roč. 30, č. 7 (2022), s. 10645-10663. ISSN 1094-4087
Grant CEP: GA MŠMT EF15_003/0000476
GRANT EU: European Commission(XE) 101016787 - DEEPER
Institucionální podpora: RVO:68081731
Klíčová slova: scattering medium * transmission * light
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.8, rok: 2022
Způsob publikování: Open access
https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-7-10645&id=470425

Holographic, multimode fibre (MMF) based endoscopes envision high-quality in-vivo imaging inside previously inaccessible structures of living organisms, amongst other perspective applications. Within these instruments, a digital micro-mirror device (DMD) is deployed in order to holographically synthesise light fields which, after traversing the multimode fibre, form foci at desired positions behind the distal fibre facet. When applied in various imaging modalities, the purity and sharpness of the achieved foci are determinant for the imaging performance. Here we present diffraction-limited foci, which contain in excess of 96% of optical power delivered by the fibre which, to the best of our knowledge, represents the highest value reported to date. Further, we quantitatively study the impact of various conditions of the experimental procedure including input polarisation settings, influence of ghost diffraction orders, light modulation regimes, bias of the calibration camera and the influence of noise.
Trvalý link: https://hdl.handle.net/11104/0333538