Dr. Siddharth Sivankutty Profile

Dr. Siddharth Sivankutty

Research Fellow at CNRS, Universite de Lille

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 20 June 2024 Presentation

Improvement of the signal-to-noise ratio in dual comb spectrometry through time multiplexing

Debanuj Chatterjee, Eve-Line Bancel, Siddharth Sivankutty, Herve Rigneault, Steven Cundiff, Arnaud Mussot

Proceedings Volume 12999, 129991H (2024) https://doi.org/10.1117/12.3016986

KEYWORDS: Interferograms, Signal to noise ratio, Spectroscopy, Phase shifting, Education and training, Phase shifts, Multiplexing, Pulse signals, Electrooptic modulation, Sampling rates

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Proceedings Article | 16 March 2023 Presentation

Flexible two-photon lensless endoscope with tapered multicore fibers (Conference Presentation)

Hervé Rigneault, Fatima El Moussawi, Matthias Hofer, Naveen Gajendra Kumar, Damien Labat, Andy Cassez, Geraud Bouwmans, Siddharth Sivankutty, Rosa Cossart, Olivier Vanvincq, Esben Andresen

Proceedings Volume PC12388, PC123880B (2023) https://doi.org/10.1117/12.2648076

KEYWORDS: Optical fibers, Endoscopes, Two photon imaging, Neurons, Image transmission, Fiber optic components

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Proceedings Article | 1 April 2022 Presentation

Complex glass cutting allowed thanks to a reflectively generated Bessel beam with homogeneous energy distribution over the propagation axis

Siddharth Sivankutty, Antonin Billaud, Julien Bayol, Gwenn Pallier, Pu Jian, Guillaume Labroille

Proceedings Volume PC11991, PC119910R (2022) https://doi.org/10.1117/12.2626595

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Proceedings Article | 1 April 2022 Presentation

QCL beam combining based on multi-plane light conversion for countermeasure application

Pierre Vernaz-Gris, Siddharth Sivankutty, Olivier Pinel, Guillaume Labroille, Tangi Le Guennic, Pu Jian, Gregory Maisons, Johan Abautret, Fahem Boulila, Matthieu Carras, Jean-François Morizur

Proceedings Volume PC11982, PC1198201 (2022) https://doi.org/10.1117/12.2612010

KEYWORDS: Quantum cascade lasers, Optical testing, Mid-IR, Light, Laser sources, Laser applications, Imaging systems

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Proceedings Article | 25 August 2020 Presentation

Spatial frequency spontaneous and nonlinear Raman microscopy

Randy Bartels, Sandro Heuke, Siddharth Sivankutty, Camille Scotté, Patrick Stockton, Anne Sentenac, Hervé Rigneault

Proceedings Volume 11497, 1149712 (2020) https://doi.org/10.1117/12.2571276

KEYWORDS: Microscopy, Raman spectroscopy, Spatial frequencies, Modulation, Imaging systems, Raman scattering, Sensors, Coherence imaging, Optical microscopy, Complex systems

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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

Compressive Raman imaging (Conference Presentation)

Hervé Rigneault, Camille Scotte, Siddharth Sivankutty, Randy Bartels

Proceedings Volume 11250, 112500Q (2020) https://doi.org/10.1117/12.2542708

KEYWORDS: Raman spectroscopy, Sensors, Detector arrays, Hyperspectral imaging, Charge-coupled devices, Electron multiplying charge coupled devices, Chemical species, Optical filters, CCD image sensors, Light scattering

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Proceedings Article | 10 March 2020 Presentation

Spatial frequency projection imaging of coherent anti-Stokes Raman scattering (SPIFI-CARS) (Conference Presentation)

Sandro Heuke, Siddharth Sivankutty, Camille Scotte, Patrick Stockton, Randy Bartels, Anne Sentenac, Hervé Rigneault

Proceedings Volume 11252, 1125203 (2020) https://doi.org/10.1117/12.2546002

KEYWORDS: Coherence imaging, Spatial frequencies, CARS tomography, Image processing, Microscopy, Process modeling, Raman spectroscopy, Imaging spectroscopy, Spectroscopy, Tissues

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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

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 | 4 March 2019 Presentation

High-resolution multimodal flexible miniaturized endoscope for non-linear imaging (Conference Presentation)

Vasyl Mytskaniuk, Alberto Lombardini, Siddharth Sivankutty, Esben Ravn Andresen, Xueqin Chen, Jérôme Wenger, Marc Fabert, Nicolas Joly, Frédéric Louradour, Alexandre Kudlinski, Hervé Rigneault

Proceedings Volume 10854, 108540I (2019) https://doi.org/10.1117/12.2507831

KEYWORDS: Optical fibers, Endoscopes, Tissues, Luminescence, Nonlinear optics, In vivo imaging, Second-harmonic generation, Collagen, Optical microscopy, Raman scattering

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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 | 25 January 2018 Presentation

Two-photon lensless endoscopy (Conference Presentation)

Siddharth Sivankutty, Esben Andresen, Géraud Bouwmans, Serge Monneret, Hervé Rigneault

Proceedings Volume 9691, 96910G (2018) https://doi.org/10.1117/12.2209263

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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Proceedings Article | 27 April 2016 Presentation

Ultrathin endoscopes: nonlinear lensless imaging at the tip of a multimode fiber (Conference Presentation)

Siddharth Sivankutty, Esben Andresen, Géraud Bouwmans, Serge Monneret, Hervé Rigneault

Proceedings Volume 9717, 97171D (2016) https://doi.org/10.1117/12.2209266

KEYWORDS: Endoscopes, Two photon imaging, Multimode fibers, Microscopes, Ultrafast phenomena, Dispersion, Luminescence, GRIN lenses, Wavefronts, Scattering media

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Proceedings Article | 27 April 2016 Presentation

Nonlinear endoscopy with Kagomé lattice hollow-core fibers (Conference Presentation)

Alberto Lombardini, Siddharth Sivankutty, Xueqin Chen, Jérôme Wenger, Rémi Habert, Coralie Fourcade-Dutin, Esben Andresen, Alexandre Kudlinski, Hervé Rigneault

Proceedings Volume 9691, 96910I (2016) https://doi.org/10.1117/12.2210952

KEYWORDS: Optical fibers, Endoscopes, Nonlinear optics, Endoscopy, Prototyping, Tissues, Microscopes, In vivo imaging, Diagnostics, Fiber lasers

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Proceedings Article | 14 July 2015 Paper

Towards two-photon lensless endoscopes: inter-core group delay compensation in a multi-core fiber

Esben Andresen, Siddharth Sivankutty, Géraud Bouwmans, Olivier Vainvinq, Laurent Gallais, Serge Monneret, Hervé Rigneault

Proceedings Volume 9536, 953605 (2015) https://doi.org/10.1117/12.2183676

KEYWORDS: Endoscopes, Wavefronts, Waveguides, Interferometry, Femtosecond phenomena, Endoscopy, Cladding, Image segmentation, Microscopes, Microscopy

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Proceedings Article | 22 February 2013 Paper

Towards STED microscopy with nanometric optical sectioning

Siddharth Sivankutty, Thomas Barroca, Guillaume Dupuis, Christophe Lefumeux, Céline Mayet, Arnaud Dubois, Catherine Marquer, Sandrine Lécart, Marie-Claude Potier, Emmanuel Fort, Sandrine Lévêque-Fort

Proceedings Volume 8590, 859018 (2013) https://doi.org/10.1117/12.2004883

KEYWORDS: Stimulated emission depletion microscopy, Microscopes, Microscopy, Confocal microscopy, Optical microscopy, Interfaces, Super resolution, Imaging systems, Image resolution, Molecules

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Showing 5 of 19 publications

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