Dr. Pavel V. Bulkin Profile

Dr. Pavel V. Bulkin

at Ecole Polytechnique

SPIE Involvement:

Author

Publications (15)

SPIE Journal Paper | 13 August 2022 Open Access

Mirau-based line-field confocal optical coherence tomography for three-dimensional high-resolution skin imaging

Weikai Xue, Jonas Ogien, Pavel Bulkin, Anne-Lise Coutrot, Arnaud Dubois

JBO, Vol. 27, Issue 08, 086002, (August 2022) https://doi.org/10.1117/12.10.1117/1.JBO.27.8.086002

KEYWORDS: 3D image processing, Cameras, Skin, Confocal microscopy, Reflectivity, Mirrors, Mirau interferometers, Optical coherence tomography, Image resolution, 3D acquisition

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Significance: Line-field confocal optical coherence tomography (LC-OCT) is a recently introduced high-resolution imaging modality based on a combination of low-coherence optical interferometry and reflectance confocal optical microscopy with line illumination and line detection. Capable of producing three-dimensional (3D) images of the skin with cellular resolution, in vivo, LC-OCT has been mainly applied in dermatology and dermo-cosmetology. The LC-OCT devices capable of acquiring 3D images reported so far are based on a Linnik interferometer using two identical microscope objectives. In this configuration, LC-OCT cannot be designed to be a very compact and light device, and the image acquisition speed is limited.Aim: The objective of this work was to develop a more compact and lighter LC-OCT device that is capable of acquiring images faster without significant degradation of the resolution and with optimized detection sensitivity.Approach: We developed an LC-OCT device based on a Mirau interferometer using a single objective. Dynamic adjustment of the camera frequency during the depth scan is implemented, using a faster camera and a more powerful light source. The reflectivity of the beam-splitter in the Mirau interferometer was optimized to maximize the detection sensitivity. A galvanometer scanner was incorporated into the device for scanning the illumination line laterally. A stack of adjacent B-scans, constituting a 3D image, can thus be acquired.Results: The device is able to acquire and display B-scans at 17 fps. 3D images with a quasi-isotropic resolution of ∼1.5 μm (1.3, 1.9, and 1.1 μm in the x , y, and z directions, respectively) over a field of 940 μm × 600 μm × 350 μm (x × y × z) can be obtained. 3D imaging of human skin at cellular resolution, in vivo, is reported.Conclusions: The acquisition rate of the B-scans, at 17 fps, is unprecedented in LC-OCT. Compared with the conventional LC-OCT devices based on a Linnik interferometer, the reported Mirau-based LC-OCT device can acquire B-scans ∼2 times faster. With potential advantages in terms of compactness and weight, a Mirau-based device could easily be integrated into a smaller and lighter handheld probe for use by dermatologists in their daily medical practice.

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Proceedings Article | 7 March 2022 Poster + Paper

Mirau-based line-field confocal optical coherence tomography for three-dimensional high-resolution skin imaging

Weikai Xue, Jonas Ogien, Pavel Bulkin, Anne-Lise Coutrot, Arnaud Dubois

Proceedings Volume 11948, 119480G (2022) https://doi.org/10.1117/12.2608747

KEYWORDS: Skin, 3D acquisition, 3D image processing, Optical coherence tomography, Cameras, Mirrors, Objectives, Image resolution, Confocal microscopy, Mirau interferometers, Dermatology, Oncology, Optical interferometry, Optical coherence microscopy

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Proceedings Article | 23 November 2015 Paper

Comparative study of the laser damage threshold and optical characteristics of Ta2O5-SiO2 multilayers deposited using various methods

Roelene Botha, Silvia Schwyn Thöny, Martin Grössl, Safer Mourad, Clau Maissen, Jacobus Venter, Thomas Südmeyer, Martin Hoffmann, Pavel Bulkin, Sabine Linz-Dittrich, David Bischof, Markus Michler, Stefan Rinner, Andreas Ettemeyer

Proceedings Volume 9632, 963203 (2015) https://doi.org/10.1117/12.2194084

KEYWORDS: Manufacturing, Optical coatings, Polishing, Laser induced damage, Laser damage threshold, Silica, Multilayers, Optics manufacturing, Ion beams, Sputter deposition

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Proceedings Article | 5 April 2007 Paper

Metrology of replicated diffractive optics with Mueller polarimetry in conical diffraction

Tatiana Novikova, Antonello De Martino, Pavel Bulkin, Quang Nguyen, Bernard Drévillon, Vladimir Popov, Alexander Chumakov

Proceedings Volume 6518, 65184E (2007) https://doi.org/10.1117/12.711401

KEYWORDS: Diffraction gratings, Atomic force microscopy, Polarimetry, Nickel, Metrology, Diffraction, Solids, Spectroscopy, Holograms, Electroplating

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Proceedings Article | 5 October 2005 Paper

Optical thin films deposition by MDECR-PECVD

Bicher Haj Ibrahim, Pavel Bulkin, Dmitri Daineka, Bernard Drévillon

Proceedings Volume 5963, 59631Q (2005) https://doi.org/10.1117/12.624825

KEYWORDS: Gradient-index optics, Ellipsometry, Antireflective coatings, Antennas, Plasma, Glasses, Silicon, Process control, Microwave radiation, Spectroscopy

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Proceedings Article | 3 April 2003 Paper

Matrix-distributed ECR-PECVD for high-rate deposition of silica for applications in integrated optics

Gregory Girard, Dmitri Danieka, Pavel Bulkin, Jean-Eric Bouree

Proceedings Volume 4944, (2003) https://doi.org/10.1117/12.468294

KEYWORDS: Microwave radiation, Silica, Absorption, Hydrogen, Refractive index, Oxygen, Plasma, Ellipsometry, Antennas, Silicon

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SPIE Journal Paper | 1 April 1997

Rugate filter manufacturing by electron cyclotron resonance plasma enhanced chemical vapor deposition of SiNx

Pieter Swart, Pavel Bulkin, Beatrys Lacquet

OE, Vol. 36, Issue 04, (April 1997) https://doi.org/10.1117/12.10.1117/1.601281

KEYWORDS: Optical coatings, Refractive index, Optical filters, Reflectivity, Filtering (signal processing), Manufacturing, Optical fibers, Absorption, Apodization, Plasma enhanced chemical vapor deposition

SPIE Journal Paper | 1 February 1997

Ouput power characteristics of a Fabry-Perot Er3+-doped fiber laser

Johan Burger, Pieter Swart, Stephanus Spammer, Pavel Bulkin

OE, Vol. 36, Issue 02, (February 1997) https://doi.org/10.1117/12.10.1117/1.601232

KEYWORDS: Fiber lasers, Reflectivity, Mirrors, Signal attenuation, Erbium, Fiber Bragg gratings, Absorption, Sensors, Laser damage threshold, Telecommunications

Proceedings Article | 19 August 1996 Paper

Real-time monitoring by multiwavelength ellipsometry of the growth of silicon alloy multilayers and gradient index structures

Morten Kildemo, S. Deniau, Pavel Bulkin, Bernard Drevillon, Ola Hunderi

Proceedings Volume 2776, (1996) https://doi.org/10.1117/12.246805

KEYWORDS: Refractive index, Multilayers, Feedback control, Ellipsometry, Optical coatings, Gradient-index optics, Plasma, Modulation, Process control, Reflection

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Proceedings Article | 19 August 1996 Paper

Deposition of conventional and gradient optical coatings by ECR plasma-enhanced chemical vapor deposition

Pavel Bulkin, Pieter Swart, Beatrys Lacquet, Anatoli Chtcherbakov

Proceedings Volume 2776, (1996) https://doi.org/10.1117/12.246840

KEYWORDS: Refractive index, Optical coatings, Reflectivity, Optical filters, Silicon, Plasma enhanced chemical vapor deposition, Optics manufacturing, Multilayers, Nitrogen, Thin film coatings

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SPIE Journal Paper | 1 April 1996

Long dual-cavity fiber optic Fabry-Perot strain sensor with rugate mirrors

Anatoli Chtcherbakov, Pieter Swart, Stephanus Spammer, Pavel Bulkin

OE, Vol. 35, Issue 04, (April 1996) https://doi.org/10.1117/12.10.1117/1.600712

KEYWORDS: Mirrors, Sensors, Fabry–Perot interferometry, Reflectivity, Fiber optics, Fiber optics sensors, Interferometers, Fabry–Perot interferometers, Optical fibers, Signal detection

Proceedings Article | 25 September 1995 Paper

Rugate mirrors on optical fiber for sensor applications

Anatoli Chtcherbakov, Pieter Swart, Stephanus Spammer, Pavel Bulkin

Proceedings Volume 2510, (1995) https://doi.org/10.1117/12.221714

KEYWORDS: Mirrors, Sensors, Optical fibers, Fabry–Perot interferometry, Reflectivity, Interferometers, Semiconductor lasers, Light sources, Refractive index, Signal detection

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Proceedings Article | 15 September 1995 Paper

Fiber laser with in-fiber Bragg reflector: design formula with experimental verification

Johan Burger, Pieter Swart, Stephanus Spammer, Pavel Bulkin

Proceedings Volume 2507, (1995) https://doi.org/10.1117/12.219625

KEYWORDS: Reflectivity, Fiber lasers, Mirrors, Signal attenuation, Sensors, Wavelength division multiplexing, Fiber Bragg gratings, Absorption, Reflectors, Laser resonators

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Proceedings Article | 4 November 1994 Paper

Electron cyclotron resonance plasma chemical vapor deposition for rugate film manufacturing

Pavel Bulkin, Pieter Swart, Beatrys Lacquet

Proceedings Volume 2253, (1994) https://doi.org/10.1117/12.192121

KEYWORDS: Refractive index, Optical coatings, Reflectivity, Optical filters, Optical fibers, Plasma, Absorption, Microwave radiation, Filtering (signal processing), Manufacturing

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SPIE Journal Paper | 1 September 1994

Optical properties of SiN_x deposited by electron cyclotron resonance plasma-enhanced deposition

Pavel Bulkin, Pieter Swart, Beatrys Lacquet

OE, Vol. 33, Issue 09, (September 1994) https://doi.org/10.1117/12.10.1117/12.175695

KEYWORDS: Refractive index, Silicon, Optical properties, Silicon films, Absorption, Nitrogen, Thin films, Amorphous silicon, Optical filters, Hydrogen

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Showing 5 of 15 publications

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