Dr. Gary J. Hawkins Profile

Dr. Gary J. Hawkins

Group Leader at Univ of Oxford

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Author

Publications (16)

SPIE Journal Paper | 15 March 2024

Extreme broadband dichroics: Monte Carlo transmission line modeling for astronomical spectroscopy

Vinooja Thurairethinam, Giorgio Savini, Gary Hawkins, Paolo Chioetto

JATIS, Vol. 10, Issue 01, 018005, (March 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.018005

KEYWORDS: Coating thickness, Reflection, Monte Carlo methods, Refractive index, Design, Contamination, Multilayers, Zinc selenide, Optical coatings, Absorption

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Proceedings Article | 27 August 2022 Poster + Paper

Monte Carlo transmission line modelling of multilayer optical coatings for performance sensitivity of a dichroic filter for the ARIEL space telescope

Vinooja Thurairethinam, Giorgio Savini, Mario De Lucia, Gerhard Ulbricht, Gary Hawkins, Eoin Baldwin, Deirdre Coffey, Jack Piercy, Tom Ray

Proceedings Volume 12180, 1218048 (2022) https://doi.org/10.1117/12.2629203

KEYWORDS: Multilayers, Refractive index, Optical coatings, Performance modeling, Thin films, Thin film coatings, Optical filters, Monte Carlo methods

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Proceedings Article | 20 November 2017 Open Access

Integrated optics for nulling interferometry in the thermal infrared: progress and recent achievements

M. Barillot, E. Barthelemy, L. Bastard, J.-E. Broquin, G. Hawkins, V. Kirschner, S. Ménard, G. Parent, C. Poinsot, A. Pradel, C. Vigreux, S. Zhang, X. Zhang

Proceedings Volume 10565, 105650Y (2017) https://doi.org/10.1117/12.2309134

KEYWORDS: Integrated optics, Waveguides, Infrared radiation, Information operations, Optical filters, Chalcogenides, Polishing, Astronomical imaging, Nulling interferometry, Thermography

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Proceedings Article | 22 July 2016 Paper

Cooled optical filters for Q-band infrared astronomy (15-40 µm)

Gary Hawkins, Richard Sherwood, Karim Djotni, Timothy Threadgold

Proceedings Volume 9912, 991235 (2016) https://doi.org/10.1117/12.2231669

KEYWORDS: Optical filters, Infrared radiation, Thin films, Transparency, Multilayers, Absorption, Bandpass filters, Silicon, Lead, Germanium

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Proceedings Article | 25 September 2008 Paper

Mid-infrared filters for astronomical and remote sensing instrumentation

Gary Hawkins, Richard Sherwood, Karim Djotni

Proceedings Volume 7101, 710114 (2008) https://doi.org/10.1117/12.796635

KEYWORDS: Optical filters, Mid-IR, Absorption, Multilayers, Transparency, Germanium, Space telescopes, Refractive index, Zinc, Infrared radiation

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Proceedings Article | 28 July 2008 Paper

Integrated optics for nulling interferometry in the thermal infrared

Marc Barillot, Eleonore Barthelemy, Jean-Emmanuel Broquin, Jérôme Frayret, Jérôme Grelin, Gary Hawkins, Volker Kirschner, Gilles Parent, Annie Pradel, Emmanuel Rossi, Caroline Vigreux, Shaoqian Zhang, Xianghua Zhang

Proceedings Volume 7013, 701314 (2008) https://doi.org/10.1117/12.789378

KEYWORDS: Integrated optics, Optical filters, Waveguides, Chalcogenides, Etching, Information operations, Infrared radiation, Thermography, Glasses, Nulling interferometry

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Proceedings Article | 28 August 2006 Paper

Investigation of cadmium alternatives in thin-film coatings

S. Wakeham, G. Hawkins

Proceedings Volume 6286, 62860C (2006) https://doi.org/10.1117/12.680349

KEYWORDS: Thin film coatings, Tin, Thin films, Refractive index, Optical coatings, Oxygen, Cadmium, Multilayers, Infrared radiation, Chemical vapor deposition

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Proceedings Article | 12 October 2004 Paper

The design and fabrication of multiple dichroic beamsplitters for the MIRI spectrometer (4.8-29µm)

Martyn Wells, Gary Hawkins, Goran Olofsson

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.551151

KEYWORDS: Refractive index, Spectroscopy, Multilayers, Reflectivity, Transparency, Beam splitters, Optical filters, Coating, Antireflective coatings, Mid-IR

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Proceedings Article | 30 January 2003 Paper

Interference filters and coatings for mid-infrared astronomy (8-30 um)

Gary Hawkins, Roger Hunneman, Richard Sherwood, Barbara Barrett

Proceedings Volume 4842, (2003) https://doi.org/10.1117/12.458056

KEYWORDS: Optical filters, Zinc, Absorption, Bandpass filters, Astronomy, Refractive index, Germanium, Mid-IR, Multilayers, Absorption filters

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Proceedings Article | 18 November 1998 Paper

Spectral design and verification of HIRDLS filters and antireflection coatings using an integrated system performance approach

Gary Hawkins, Roger Hunneman, John Barnett, John Whitney

Proceedings Volume 3437, (1998) https://doi.org/10.1117/12.331311

KEYWORDS: Optical filters, Antireflective coatings, Sensors, Germanium, Absorption, Manufacturing, Integration, Absorption filters, System integration, Signal detection

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Proceedings Article | 18 November 1998 Paper

Manufacture and spectral assessment of the filters and antireflection coatings for use in the HIRDLS instrument

Roger Hunneman, Gary Hawkins

Proceedings Volume 3437, (1998) https://doi.org/10.1117/12.331312

KEYWORDS: Optical filters, Bandpass filters, Antireflective coatings, Sensors, Germanium, Absorption, Multilayers, Electronic filtering, Manufacturing, Lenses

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Proceedings Article | 4 November 1994 Paper

Infrared filters for space-flight focal plane array applications

Gary Hawkins, Roger Hunneman, Colin Cole

Proceedings Volume 2253, (1994) https://doi.org/10.1117/12.192103

KEYWORDS: Optical filters, Sensors, Antireflective coatings, Germanium, Staring arrays, Multilayers, Absorption, Bandpass filters, Image filtering, Radiometry

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Proceedings Article | 30 September 1994 Paper

High-performance infrared filters for the HIRDLS 21-channel focal plane detector array

Roger Hunneman, John Barnett, Gary Hawkins

Proceedings Volume 2210, (1994) https://doi.org/10.1117/12.188110

KEYWORDS: Optical filters, Bandpass filters, Sensors, Absorption, Germanium, Atmospheric optics, Electronic filtering, Multilayers, Aerosols, Optical filtering

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Proceedings Article | 30 September 1994 Paper

Design and fabrication of infrared filters for remote sounding instrumentation

Gary Hawkins, Roger Hunneman

Proceedings Volume 2210, (1994) https://doi.org/10.1117/12.188124

KEYWORDS: Optical filters, Sensors, Bandpass filters, Radiometry, Multilayers, Beam splitters, Absorption, Optical coatings, Optical filtering, Germanium

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Proceedings Article | 1 October 1990 Paper

Preliminary results from infrared multilayer filters and materials exposed to the space environment on the NASA LDEF mission

Gary Hawkins, Roger Hunneman, John Seeley

Proceedings Volume 1320, (1990) https://doi.org/10.1117/12.22348

KEYWORDS: Infrared radiation, Bandpass filters, Space operations, Spectrophotometry, Aerospace engineering, Infrared technology, Optical filters, Oxygen, Germanium, Atmospheric optics

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Proceedings Article | 1 August 1990 Paper

System performance in IR atmospheric radiometry

John Seeley, Roger Hunneman, Gary Hawkins

Proceedings Volume 1270, (1990) https://doi.org/10.1117/12.20381

KEYWORDS: Radiometry, Optical filters, Atmospheric optics, Earth's atmosphere, Mars, Silicon, Polymers, Infrared imaging, Radio optics, Atmospheric sensing

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Showing 5 of 16 publications

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