Observing distant objects with a multimode fiber-based holographic endoscope

Autor: Ivo T. Leite, Sergey Turtaev, Dirk E. Boonzajer Flaes, Tomáš Čižmár

Publikováno v: APL Photonics, Vol 6, Iss 3, Pp 036112-036112-9 (2021)

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

Externí odkaz: https://doaj.org/article/696bcf659613451b8186f1f4114490f4

ptyLab: a cross-platform inverse modeling toolbox for conventional and Fourier ptychography

Autor: Jürgen Hess, Daniel Penagos, Antonios Pelekanidis, Wilhelm Eschen, Mengqi Du, Dirk E. Boonzajer Flaes, Anne de Beurs, Thomas Wilhein, Jan Rothhardt, Max Rose, Stefan Witte, Lars Loetgering, Tomas Aidukas, Rainer Heintzmann

Publikováno v: Loetgering, L, Aidukas, T, Du, M, Flaes, D B, Penagos, D, Rose, M, Pelekanidis, A, de Beurs, A, Eschen, W, Hess, J, Wilhein, T, Heintzmann, R, Rothhardt, J & Witte, S 2021, ptyLab: A cross-platform inverse modeling toolbox for conventional and Fourier ptychography . in Computational Optical Sensing and Imaging 2021 (COSI) : [Proceedings] ., CW6B.3, Optics InfoBase Conference Papers, OSA-The Optical Society, Computational Optical Sensing and Imaging, COSI 2021-Part of OSA Imaging and Applied Optics Congress 2021, Virtual, Online, United States, 19/07/21 . < https://www.osapublishing.org/abstract.cfm?uri=COSI-2021-CW6B.3 >
Computational Optical Sensing and Imaging 2021 (COSI): [Proceedings]
Computational Optical Sensing and Imaging 2021 (COSI)

We present a cross-platform software, called ptyLab, enabling both conventional and Fourier ptychographic data analysis. The unified framework will accelerate cross- pollination between the two techniques. The code is available open-source in both MA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2b4c08a52b55d1e934ebd916039b4f8
https://doi.org/10.1364/cosi.2021.cw6b.3

Interference probe ptychography for computational amplitude and phase microscopy

Autor: Stefan Witte, Dirk E. Boonzajer Flaes

Publikováno v: Optics Express, 26(24), 31372-31390. The Optical Society
Boonzajer Flaes, D E & Witte, S 2018, ' Interference probe ptychography for computational amplitude and phase microscopy ', Optics Express, vol. 26, no. 24, pp. 31372-31390 . https://doi.org/10.1364/OE.26.031372
Optics Express

We have developed an approach to Fresnel domain ptychography in which the illumination consists of an interference pattern. This pattern is conveniently created by overlapping two coherent beams at an angle. Only the phase and orientation of the inte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca53a4d10a30efac749c062adf69ba72
https://research.vu.nl/en/publications/973a591d-ea47-4fb4-a806-eac114443a01

Robustness of Light-Transport Processes to Bending Deformations in Graded-Index Multimode Waveguides

Autor: Tomáš Čižmár, Jan Stopka, Dirk E. Boonzajer Flaes, Sergey Turtaev, Tomáš Tyc, Johannes F. de Boer

Publikováno v: Physical Review Letters
Physical Review Letters, 120(23):233901, 1-5. American Physical Society
Boonzajer Flaes, D E, Stopka, J, Turtaev, S, De Boer, J F, Tyc, T & ČiŽmár, T 2018, ' Robustness of Light-Transport Processes to Bending Deformations in Graded-Index Multimode Waveguides ', Physical Review Letters, vol. 120, no. 23, 233901, pp. 1-5 . https://doi.org/10.1103/PhysRevLett.120.233901

Light transport through a multimode optical waveguide undergoes changes when subjected to bending deformations. We show that optical waveguides with a perfectly parabolic refractive index profile are almost immune to bending, conserving the structure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0b4afa0954a7b0af6dd2c33d6d51e9f

Time-averaged image projection through a multimode fiber

Autor: Dirk E. Boonzajer Flaes, Tomáš Čižmár, Hana Štolzová

Publikováno v: Optics Express

Many disciplines, ranging from lithography to opto-genetics, require high-fidelity image projection. However, not all optical systems can display all types of images with equal ease. Therefore, the image projection quality is dependent on the type of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9294c2988fc858d43d489e6dd03d12