Prof. Ermanno F. Borra Profile

Prof. Ermanno F. Borra

Professor at Univ Laval

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 13 September 2012 Paper

Woofer-tweeter adaptive optics in very strong turbulence using a magnetic-liquid deformable mirror

Denis Brousseau, Jean-Pierre Véran, Simon Thibault, Ermanno Borra, Simon. F.-Boivin

Proceedings Volume 8447, 84473Z (2012) https://doi.org/10.1117/12.925174

KEYWORDS: Actuators, Adaptive optics, Turbulence, Deformable mirrors, Mirrors, Sensors, Photodiodes, Magnetism, Liquids, Laser optics

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Proceedings Article | 30 September 2011 Paper

Adaptive null test system using a ferrofluid deformable mirror

Daniel Landry, Denis Brousseau, Simon Thibault, Ermanno Borra

Proceedings Volume 8169, 81690Z (2011) https://doi.org/10.1117/12.896923

KEYWORDS: Fused deposition modeling, Wavefronts, Actuators, Deformable mirrors, Aspheric lenses, Computer generated holography, Metrology, Optical components, Optical testing, Laser optics

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Proceedings Article | 29 July 2010 Paper

Lunar liquid mirror telescope: structural concepts

Peter Klimas, Neil Rowlands, Paul Hickson, Ermanno Borra, Simon Thibault

Proceedings Volume 7732, 77322U (2010) https://doi.org/10.1117/12.858198

KEYWORDS: Mirrors, Space telescopes, Telescopes, Liquids, James Webb Space Telescope, Mirror structures, Ultraviolet telescopes, Ultraviolet radiation, Solids, Structural design

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Proceedings Article | 29 July 2010 Paper

Ferrofluid deformable mirrors: recent advances and results

D. Brousseau, E. Borra

Proceedings Volume 7736, 77362U (2010) https://doi.org/10.1117/12.856121

KEYWORDS: Fused deposition modeling, Actuators, Wavefronts, Magnetism, Deformable mirrors, Liquids, Mirrors, Astronomy, Wavefront sensors, Adaptive optics

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Proceedings Article | 19 July 2010 Paper

Liquid deformable mirror for advanced sub-optical system testing

S. Thibault, D. Brousseau, E. Borra

Proceedings Volume 7739, 773910 (2010) https://doi.org/10.1117/12.857867

KEYWORDS: Fused deposition modeling, Wavefronts, Telescopes, Actuators, Space telescopes, Liquids, Deformable mirrors, Mirrors, Magnetism, Optical testing

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Proceedings Article | 14 July 2008 Paper

Wavefront correction with a ferrofluid deformable mirror: experimental results and recent developments

Denis Brousseau, Ermanno Borra, Simon Thibault, Anna M. Ritcey, Jocelyn Parent, Omar Seddiki, Jean-Philippe Déry, Luc Faucher, Julien Vassallo, Azadeh Naderian

Proceedings Volume 7015, 70153J (2008) https://doi.org/10.1117/12.787840

KEYWORDS: Fused deposition modeling, Actuators, Magnetism, Wavefronts, Mirrors, Liquids, Deformable mirrors, Prototyping, Adaptive optics, Reflectivity

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Proceedings Article | 30 October 2007 Paper

Hartmann-Shack measurements of ferrofluidic mirror dynamics

A. Seaman, J. Macpherson, E. Borra, A. Ritcey, D. Asselin, H. Jerominek, S. Thibault, M. Campbell

Proceedings Volume 6796, 679603 (2007) https://doi.org/10.1117/12.778510

KEYWORDS: Mirrors, Actuators, Eye, Fluid dynamics, Magnetism, Wavefronts, Adaptive optics, Reflectivity, Control systems, Optical components

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Proceedings Article | 27 July 2006 Paper

Nanoengineered parabolic liquid mirrors

E. Borra, D. Brousseau, G. Gagné, L. Faucher, A. Ritcey

Proceedings Volume 6273, 62730O (2006) https://doi.org/10.1117/12.669844

KEYWORDS: Mirrors, Liquids, Reflectivity, Coating, Mercury, Nanoparticles, Thin film coatings, Silver, Ronchi rulings, Optical testing

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Proceedings Article | 7 July 2006 Paper

A Lunar Liquid Mirror Telescope (LLMT) for deep-field infrared observations near the lunar pole

Roger Angel, Dan Eisenstein, Suresh Sivanandam, Simon Worden, Jim Burge, Ermanno Borra, Clément Gosselin, Omar Seddiki, Paul Hickson, Ki Bui Ma, Bernard Foing, Jean-Luc Josset, Simon Thibault, Paul Van Susante

Proceedings Volume 6265, 62651U (2006) https://doi.org/10.1117/12.669994

KEYWORDS: Telescopes, James Webb Space Telescope, Space telescopes, Liquids, Mirrors, Stars, Infrared telescopes, Infrared radiation, Galactic astronomy, Sun

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Proceedings Article | 28 June 2006 Paper

Nanoengineered ferrofluid deformable mirrors: a progress report

S. Thibault, D. Brousseau, M. Rioux, S. Senkow, J.-P. Déry, E. Borra, A. Ritcey

Proceedings Volume 6272, 62723I (2006) https://doi.org/10.1117/12.670297

KEYWORDS: Mirrors, Actuators, Magnetism, Deformable mirrors, Fused deposition modeling, Liquids, Algorithm development, Particles, Adaptive optics, Reflectivity

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Proceedings Article | 27 June 2006 Paper

The 4m international liquid mirror telescope (ILMT)

J. Surdej, O. Absil, P. Bartczak, E. Borra, J.-P. Chisogne, J.-F. Claeskens, B. Collin, M. De Becker, D. Defrère, S. Denis, C. Flebus, O. Garcet, P. Gloesener, C. Jean, P. Lampens, C. Libbrecht, A. Magette, J. Manfroid, D. Mawet, Th. Nakos, N. Ninane, J. Poels, A. Pospieszalska, P. Riaud, P.-G. Sprimont, J.-P. Swings

Proceedings Volume 6267, 626704 (2006) https://doi.org/10.1117/12.671695

KEYWORDS: Telescopes, Charge-coupled devices, Mirrors, Liquids, Galactic astronomy, Sensors, Stars, Astronomy, CCD image sensors, Astronomical telescopes

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Proceedings Article | 13 October 2005 Paper

A ferrofluidic deformable mirror for ophthalmology

J. Macpherson, S. Thibault, E. Borra, A. Ritcey, N. Carufel, D. Asselin, H. Jerominek, M. Campbell

Proceedings Volume 5969, 59691C (2005) https://doi.org/10.1117/12.628676

KEYWORDS: Mirrors, Eye, Deformable mirrors, Actuators, Ophthalmology, Magnetism, Wavefronts, Reflectivity, Fused deposition modeling, Optical components

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Proceedings Article | 25 October 2004 Paper

Deformable mirrors based on magnetic liquids

Phil Laird, Ermanno Borra, Rosangela Bergamasco, Julie Gingras, Long Truong, Anna Ritcey

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552141

KEYWORDS: Liquids, Magnetism, Actuators, Mirrors, Reflectivity, Deformable mirrors, Coating, Adaptive optics, Particles, Silver

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Proceedings Article | 17 February 2003 Paper

Applications of magnetically shaped liquid optical surfaces

Phil Laird, R. Bergamasco, Vincent Berube, Ermanno Borra, Anna-Marie Ritcey, Helene Yockell-Lelievre

Proceedings Volume 4833, (2003) https://doi.org/10.1117/12.474405

KEYWORDS: Liquids, Magnetism, Particles, Reflectivity, Actuators, Mirrors, Silver, Deformable mirrors, Chemistry, Mercury

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Proceedings Article | 7 February 2003 Paper

Ferrofluid-based deformable mirrors: a new approach to adaptive optics using liquid mirrors

Phil Laird, R. Bergamasco, Vincent Berube, Ermanno Borra, Julie Gingras, Anna-Marie Ritcey, Myriam Rioux, Nathalie Robitaille, Simon Thibault, L. Vieira da Silva, Helene Yockell-Lelievre

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459065

KEYWORDS: Liquids, Magnetism, Mirrors, Reflectivity, Actuators, Deformable mirrors, Particles, Adaptive optics, Metals, Silver

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Proceedings Article | 20 July 2000 Paper

Tiltable liquid mirror telescopes

Ermanno Borra, Anna-Marie Ritcey

Proceedings Volume 4003, (2000) https://doi.org/10.1117/12.391522

KEYWORDS: Liquids, Mirrors, Silicon, Telescopes, Mercury, Reflectivity, Silver, Astronomical telescopes, Space telescopes, Kinematics

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Proceedings Article | 21 September 1998 Paper

Liquid mirrors: a new technology for optical designers

Simon Thibault, Ermanno Borra

Proceedings Volume 3482, (1998) https://doi.org/10.1117/12.321989

KEYWORDS: Mirrors, Liquids, Mercury, Optical design, Scanners, Sensors, Astronomy, Telescopes, Reflectivity, Diffraction

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Proceedings Article | 25 August 1998 Paper

Large Zenith Telescope project: a 6-m mercury-mirror telescope

Paul Hickson, Ermanno Borra, Remi Cabanac, Scott Chapman, V. de Lapparent, M. Mulrooney, Gordon Walker

Proceedings Volume 3352, (1998) https://doi.org/10.1117/12.319286

KEYWORDS: Telescopes, Mirrors, Space telescopes, Mercury, Galactic astronomy, Charge-coupled devices, Astronomical telescopes, Astronomy, Image quality, CCD cameras

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Proceedings Article | 10 December 1997 Paper

Development of a telecentric 3D sensor for large-volume inspection

Simon Thibault, Stan Szapiel, Ermanno Borra

Proceedings Volume 3204, (1997) https://doi.org/10.1117/12.294450

KEYWORDS: Sensors, Liquids, Mirrors, Inspection, Scanners, Head, Prototyping, Distortion

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Proceedings Article | 25 September 1997 Paper

Telecentric scanner for 3D profilometry of very large objects

Simon Thibault, Ermanno Borra, Stan Szapiel

Proceedings Volume 3100, (1997) https://doi.org/10.1117/12.287747

KEYWORDS: Mirrors, Liquids, Sensors, Scanners, 3D scanning, Reflectivity, Distortion, Laser scanners, 3D acquisition, Mercury

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Proceedings Article | 21 March 1997 Paper

Liquid mirror telescopes: a progress report

Ermanno Borra, Marc Ferrari, Luc Girard, Gilberto Moretto, Gregoire Tremblay, Gerard Lemaitre

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269054

KEYWORDS: Mirrors, Liquids, Telescopes, Mercury, Interferometry, Light scattering, Charge-coupled devices, Lenses, Point spread functions, Optical design

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Proceedings Article | 1 June 1994 Paper

Liquid mirror telescopes: a progress report

Ermanno Borra, Luc Girard, Gilberto Moretto, Min Wang, Gregoire Tremblay, Gerard Lemaitre

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176218

KEYWORDS: Mirrors, Liquids, Monochromatic aberrations, Telescopes, Wavefronts, Gallium, Astronomy, Interferometry, Mercury, Spectroscopy

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Proceedings Article | 1 June 1994 Paper

2.7-m liquid-mirror telescope

Paul Hickson, Gordon Walker, Ermanno Borra, Remi Cabanac

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176265

KEYWORDS: Mirrors, Telescopes, Mercury, Charge-coupled devices, Liquids, Sensors, Galactic astronomy, Observatories, CCD cameras, Stars

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Proceedings Article | 1 September 1991 Paper

Lunar liquid-mirror telescopes

Ermanno Borra, Robert Content

Proceedings Volume 1494, (1991) https://doi.org/10.1117/12.46727

KEYWORDS: Mirrors, Liquids, Space telescopes, Telescopes, Metals, Monochromatic aberrations, Gallium, Reflectivity, Astronomical telescopes, Alkali metals

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Proceedings Article | 1 July 1990 Paper

Liquid mirrors: a progress report

Ermanno Borra, Robert Content, Mark Drinkwater, Luc Girard, Louise Tremblay, Stan Szapiel, Brad Gibson, Paul Hickson, Christopher Morbey

Proceedings Volume 1236, (1990) https://doi.org/10.1117/12.19199

KEYWORDS: Mirrors, Liquids, Mercury, Point spread functions, Astronomy, Optical telescopes, Charge-coupled devices, Observatories, Telescopes, Sensors

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Showing 5 of 25 publications

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