Dr. Viktor Tsvirkun Profile

Dr. Viktor Tsvirkun

Postdoctoral Researcher at Institut Fresnel

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Publications (8)

Proceedings Article | 7 March 2022 Presentation

High-resolution two-photon, three-photon, Harmonic generations and CARS flexible endo-microscope

Vasyl Mytskaniuk, Dylan Septier, Gaelle Brevalle, Victor Tsvirkun, Marc Fabert, Géraud Bouwmans, Frederic Louradour, Alexandre Kudlinski, Hervé Rigneault

Proceedings Volume PC11937, PC1193705 (2022) https://doi.org/10.1117/12.2608999

KEYWORDS: Harmonic generation, Tissues, Raman scattering, Multiphoton microscopy, Microscopy, Luminescence, Imaging systems, Endoscopes, Tissue optics, Spatial resolution

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Proceedings Article | 11 March 2020 Presentation

Flexible lensless endoscope with a conformationally invariant multi-core fiber (Conference Presentation)

Hervé Rigneault, Viktor Tsvirkun, Siddharth Sivankutty, Geraud Bouwmans, Olivier Vanvincq, Esben Andresen

Proceedings Volume 11248, 112480P (2020) https://doi.org/10.1117/12.2545004

KEYWORDS: Endoscopes, Image transmission

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Proceedings Article | 10 March 2020 Presentation

High-resolution multimodal flexible coherent Raman endoscope (Conference Presentation)

Hervé Rigneault, Viktor Tsvirkun, Vasyl Mytskaniuk, Marc Fabert, Frédéric Louradour, Alexandre Kudlinski

Proceedings Volume 11251, 112511C (2020) https://doi.org/10.1117/12.2545038

KEYWORDS: Endoscopes, Raman spectroscopy, Raman scattering, Microscopy, Tissues, Imaging systems, Coherence imaging, Imaging spectroscopy, In vivo imaging, Tissue optics

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Proceedings Article | 4 March 2019 Presentation

Non-interferometric calibration of the phase transmission matrix in lensless endoscopy (Conference Presentation)

Siddharth Sivankutty, Dani Kogan, Viktor Tsvirkun, Géraud Bouwmans, Esben Andresen, Marc Guillon, Miguel Alonso, Dan Oron, Hervé Rigneault

Proceedings Volume 10886, 108860H (2019) https://doi.org/10.1117/12.2508266

KEYWORDS: Calibration, Phase retrieval, Endoscopy, Speckle pattern, Interferometry

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Proceedings Article | 4 March 2019 Presentation

Two-photon lensless endoscopy through multicore fiber bundles (Conference Presentation)

Siddharth Sivankutty, Viktor Tsvirkun, Géraud Bouwmans, Esben Andresen, Hervé Rigneault

Proceedings Volume 10854, 108541A (2019) https://doi.org/10.1117/12.2508245

KEYWORDS: Endoscopy, Endoscopes, Calibration, Wavefronts, Brain imaging, Luminescence, Femtosecond phenomena, Scanners, Distortion, High speed imaging

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Proceedings Article | 4 March 2019 Presentation

Addressing bending sensitivity in multicore fiber lensless endoscopy (Conference Presentation)

Viktor Tsvirkun, Siddharth Sivankutty, Géraud Bouwmans, Olivier Vanvincq, Esben Ravn Andresen, Hervé Rigneault

Proceedings Volume 10886, 108860I (2019) https://doi.org/10.1117/12.2507952

KEYWORDS: Endoscopy, Imaging systems, Wavefronts, Endoscopes, Tissues, Complex systems, Image resolution, Ultrafast phenomena, Point spread functions

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Proceedings Article | 24 April 2017 Presentation

Improving endoscopic imaging with disordered multi-core fiber bundles (Conference Presentation)

Dan Oron, Siddharth Sivankutty, Dani Kogan, Viktor Tsvirkun, Esben Andresen, Géraud Bouwmans, Hervé Rigneault

Proceedings Volume 10073, 1007310 (2017) https://doi.org/10.1117/12.2250266

KEYWORDS: Speckle, Wavefronts, Interferometry, Endoscopy, Microscopy, Distortion, Phase retrieval, Confocal microscopy, Multiphoton microscopy, Speckle imaging

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SPIE Journal Paper | 10 October 2016 Open Access

Ultrathin endoscopes based on multicore fibers and adaptive optics: a status review and perspectives

Esben Ravn Andresen, Siddharth Sivankutty, Viktor Tsvirkun, Géraud Bouwmans, Hervé Rigneault

JBO, Vol. 21, Issue 12, 121506, (October 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.12.121506

KEYWORDS: Endoscopes, Wavefronts, Waveguides, Spatial light modulators, Optical fibers, Adaptive optics, Cladding, Polarization, Endoscopy, Calibration

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