Dr. Tarun Kumar Sharma Profile

Dr. Tarun Kumar Sharma

at Univ zu Köln

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Author

Publications (12)

Proceedings Article | 29 August 2022 Poster + Paper

Warm calibration unit of the mid-infrared ELT instrument METIS: overview and current status towards FDR

Monika Rutowska, Tarun Kumar Sharma, Michael Wiest, Sabine Graf, Lucas Labadie, Christian Straubmeier, Andreas Eckart, Stephen Todd, Tibor Agócs, Gert Raskin, Jan Goris, Marchel Gerbers, Leonard Burtscher, Roy van Boekel, Adrian Glauser, Jeffrey Lynn, Bernhard Brandl, Felix Bettonvil

Proceedings Volume 12184, 121843M (2022) https://doi.org/10.1117/12.2630802

KEYWORDS: Optical fibers, Mirrors, Mirror mounts, Interfaces, Calibration, Integrating spheres, Optical benches, Helium neon lasers, Sensors

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Proceedings Article | 29 August 2022 Poster + Paper

Optical design, analysis, and performances of the infrared and visible channels of the warm calibration unit in METIS/ELT

T. Sharma, M. Rutowska, M. Wiest, S. Graf, L. Labadie, C. Straubmeier, A. Eckart, S. Todd, T. Agócs, R. Stuik, B. Brandl, F. Bettonvil

Proceedings Volume 12184, 121843L (2022) https://doi.org/10.1117/12.2630800

KEYWORDS: Mirrors, Tolerancing, Relays, Calibration, Optical design, Mirror mounts, Spherical lenses, Optical components, Zemax

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Proceedings Article | 26 August 2022 Presentation + Paper

Ultrafast laser inscription of integrated optics two-telescope beam combiners for K-band interferometry at the CHARA array

Jacopo Siliprandi, David MacLachlan, Calum Ross, Tarun Sharma, Lucas Labadie, Kalaga Madhav, Abani Nayak, Aline Dinkelaker, Martin Roth, Ettore Pedretti, Theo ten Brummelaar, Nicholas Scott, Vincent Coudé du Foresto, Robert Thomson, Aurélien Benoît

Proceedings Volume 12183, 1218314 (2022) https://doi.org/10.1117/12.2629899

KEYWORDS: Waveguides, K band, Directional couplers, Interferometry, Ultrafast lasers, Integrated optics, Beam splitters, Spatial light modulators

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Proceedings Article | 26 August 2022 Poster + Paper

On-sky experiment of the discrete beam combiner: lessons learned and strategies for improved calibration of the transfer function

Abani Shankar Nayak, Lucas Labadie, Tarun Sharma, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Ettore Pedretti, Aline Dinkelaker, Eloy Hernandez, Kalaga Madhav, Martin Roth

Proceedings Volume 12183, 121832H (2022) https://doi.org/10.1117/12.2629673

KEYWORDS: Visibility, Waveguides, Cameras, Sensors, Photometry, Calibration, Telescopes, Photodetectors, Interferometry, Integrated optics

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Proceedings Article | 13 December 2020 Poster + Paper

Warm calibration unit of the mid-infrared E-ELT instrument METIS: overview and current status of the project

Monika Rutowska, Tarun Sharma, Michael Wiest, Sabine Graf, Christian Straubmeier, Steffen Rost, Lucas Labadie, Andreas Eckart, Leonard Burtscher, Tibor Agócs, Dirk Lesman, Remko Stuik, Adrian Glauser, Bernhard Brandl, Felix Bettonvil

Proceedings Volume 11447, 114472T (2020) https://doi.org/10.1117/12.2562219

KEYWORDS: Calibration, Mid-IR, Integrating spheres, Large telescopes, Optical engineering, Interfaces, Optical benches, Optical alignment, Black bodies, Fiber lasers

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Proceedings Article | 13 December 2020 Presentation + Paper

First on-sky results with an interferometric discrete beam combiner (DBC) at the William Herschel Telescope

Abani Shankar Nayak, Tarun Kumar Sharma, Lucas Labadie, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Éric Gendron, Jean-Tristan Buey, Fanny Chemla, Mathieu Cohen, Nazim Bharmal, Lisa Bardou, Lazar Staykov, James Osborn, Timothy Morris, Ettore Pedretti, Aline Dinkelaker, Kalaga Madhav, Martin Roth

Proceedings Volume 11446, 114461D (2020) https://doi.org/10.1117/12.2562563

KEYWORDS: Interferometry, Telescopes, Integrated optics, Waveguides, Spatial filters, Infrared radiation, Laser development, Channel waveguides, Ultrafast lasers, Borosilicate glass

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Proceedings Article | 13 December 2020 Presentation + Paper

NAIR: Novel Astronomical Instrumentation through photonic Reformatting

Robert Harris, Tarun Kumar Sharma, John Davenport, Philipp Hottinger, Theodoros Anagnos, Abani Shankar Nayak, Andreas Quirrenbach, Lucas Labadie, Kalaga Madhav, Martin Roth

Proceedings Volume 11451, 1145108 (2020) https://doi.org/10.1117/12.2562493

KEYWORDS: Imaging spectroscopy, Astronomical instrumentation, Photonic devices, Spectroscopes, Astrophotonics, Telescopes, Interferometry, Waveguides, 3D printing, Astronomical imaging

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Proceedings Article | 13 December 2020 Paper

Towards the development of mid-infrared integrated optics in the renewed context of high-contrast interferometry

Tarun Kumar Sharma, Lucas Labadie, Dominik Strixner, Simon Gross, Thomas Gretzinger, Sascha Quanz, Denis Defrère, Sanny Ahmed, Michael Withford

Proceedings Volume 11446, 1144618 (2020) https://doi.org/10.1117/12.2561022

KEYWORDS: Interferometry, Mid-IR, Integrated optics, Nulling interferometry, Data processing, New and emerging technologies, Space operations, Exoplanets, Manufacturing, Chalcogenide glass

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Proceedings Article | 13 December 2020 Presentation + Paper

K-band integrated optics beam combiners for CHARA fabricated by ultrafast laser inscription

Fraser Pike, Tarun Sharma, Aurélien Benoît, David MacLachlan, Aline Dinkelaker, Abani Nayak, Kalaga Madhav, Martin Roth, Lucas Labadie, Ettore Pedretti, Theo ten Brummelaar, Nicholas Scott, Vincent Coudé du Foresto, Robert Thomson

Proceedings Volume 11446, 114460K (2020) https://doi.org/10.1117/12.2561663

KEYWORDS: Integrated optics, K band, Ultrafast lasers, Astronomy, Astrophotonics, Waveguides, Information operations, Glasses, Optical filters, Atmospheric optics

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Proceedings Article | 9 March 2020 Presentation

Integrated discrete beam combiner with a pupil remapper for stellar interferometry (Conference Presentation)

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga Madhav, Ettore Pedretti, Stefano Minardi, Lucas Labadie, Roberto Osellame

Proceedings Volume 11287, 112870B (2020) https://doi.org/10.1117/12.2545027

KEYWORDS: Stellar interferometry, Telescopes, Interferometry, Astronomy, Waveguides, Spatial resolution, Astronomical telescopes, Wavefronts, Interferometers, Photonic integrated circuits

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Proceedings Article | 9 March 2020 Presentation

Femtosecond laser writing of 3D polarization insensitive integrated devices for astrophotonics (Conference Presentation)

Simone Piacentini, Giacomo Corrielli, Abani Shankar Nayak, Tarun Kumar Sharma, Kalaga Madhav, Andrea Adami, Ettore Pedretti, Stefano Minardi, Lucas Labadie, Roberto Osellame

Proceedings Volume 11270, 112700S (2020) https://doi.org/10.1117/12.2544978

KEYWORDS: Polarization, Femtosecond phenomena, Astrophotonics, Telescopes, Waveguides, Stellar interferometry, Birefringence, Annealing, Interferometry, Integrated photonics

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Proceedings Article | 3 January 2020 Paper

Integrated optics-interferometry using pupil remapping and beam combination at astronomical H-band

Abani Shankar Nayak, Simone Piacentini, Tarun Kumar Sharma, Giacomo Corrielli, Roberto Osellame, Lucas Labadie, Stefano Minardi, Ettore Pedretti, Kalaga Madhav, Martin Roth

Proceedings Volume 11203, 112030V (2020) https://doi.org/10.1117/12.2541608

KEYWORDS: Visibility, Integrated optics, Astronomy, Telescopes, Physics, Interferometry, Ultrafast lasers, Waveguides, Deformable mirrors, Astrophysics

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Showing 5 of 12 publications

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