Počet záznamů: 1
Observing distant objects with a multimode fiber-based holographic endoscope
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SYSNO ASEP 0543628 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Observing distant objects with a multimode fiber-based holographic endoscope Tvůrce(i) Leite, I. T. (DE)
Turtaev, S. (DE)
Boonzajer Flaes, D. E. (DE)
Čižmár, Tomáš (UPT-D) RID, ORCID, SAICelkový počet autorů 4 Číslo článku 036112 Zdroj.dok. APL Photonics. - : AIP Publishing - ISSN 2378-0967
Roč. 6, č. 3 (2021)Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova multimode optical fibre ; wavefront shaping ; holography ; transmission matrix Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP EF15_003/0000476 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UPT-D - RVO:68081731 UT WOS 000636339000001 EID SCOPUS 85103567867 DOI 10.1063/5.0038367 Anotace Holographic wavefront manipulation enables converting hair-thin multimode optical fibers into minimally invasive lensless imaging instruments conveying much higher information densities than conventional endoscopes. Their most prominent applications focus on accessing delicate environments, including deep brain compartments, and recording micrometer-scale resolution images of structures in close proximity to the distal end of the instrument. Here, we introduce an alternative far-field endoscope capable of imaging macroscopic objects across a large depth of field. The endoscope shaft with dimensions of 0.2 x 0.4 mm(2) consists of two parallel optical fibers: one for illumination and the other for signal collection. The system is optimized for speed, power efficiency, and signal quality, taking into account specific features of light transport through step-index multimode fibers. The characteristics of imaging quality are studied at distances between 20 mm and 400 mm. As a proof-of-concept, we provide imaging inside the cavities of a sweet pepper commonly used as a phantom for biomedically relevant conditions. Furthermore, we test the performance on a functioning mechanical clock, thus verifying its applicability in dynamically changing environments. With the performance reaching the standard definition of video endoscopes, this work paves the way toward the exploitation of minimally invasive holographic micro-endoscopes in clinical and diagnostics applications. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2022 Elektronická adresa https://aip.scitation.org/doi/10.1063/5.0038367
Počet záznamů: 1