Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements

Victor  Laborde; J.J.D. Loicq; Serge  Habraken

doi:10.1117/12.2630169

Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements

Victor Laborde, J.J.D. Loicq, Serge Habraken

Spaceborne Instrumentation

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

Infrared (IR) remote sensing offers a huge range of applications, mostly addressing make-or-break issues of our century (wildfires, irrigation monitoring, etc.). Multispectral spaceborne instruments require bulky optical systems designed for a specific scientific goal and have very low revisit time. Thereby, constellations of small satellites embarking compact dual-band IR imagers are very promising solutions. We study a dual-band IR diffractive element called multilayer diffractive optical elements (MLDOE). It replaces classical diffractive lenses (DOEs) that cannot operate simultaneously in two distinct wavebands. An MLDOE design is studied using the rigorous finite difference time domain (FDTD) method. Its performance at the ”best” focal plane is deduced using free-space Fourier optics wave propagation. The presented MLDOE design has over 80% Strehl ratio in both bands, outperforming classical DOEs. Its chromatic focal shift has a negative variation, in opposition to refractive lenses, allowing efficient and compact dual-band hybrid lenses.

Original language	English
Title of host publication	Space Telescopes and Instrumentation 2022
Subtitle of host publication	Optical, Infrared, and Millimeter Wave
Editors	Laura E. Coyle, Shuji Matsuura, Marshall D. Perrin
Number of pages	9
ISBN (Electronic)	9781510653412
DOIs	https://doi.org/10.1117/12.2630169
Publication status	Published - 2022
Event	SPIE Astronomical Telescopes + Instrumentation 2022 - Montréal, Canada Duration: 17 Jul 2022 → 22 Jul 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12180
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	SPIE Astronomical Telescopes + Instrumentation 2022
Country/Territory	Canada
City	Montréal
Period	17/07/22 → 22/07/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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10.1117/12.2630169

121805QFinal published version, 2 MB

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Laborde, V., Loicq, J. J. D., & Habraken, S. (2022). Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements. In L. E. Coyle, S. Matsuura, & M. D. Perrin (Eds.), Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave Article 121805Q (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12180). https://doi.org/10.1117/12.2630169

Laborde, Victor ; Loicq, J.J.D. ; Habraken, Serge . / Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements. Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave. editor / Laura E. Coyle ; Shuji Matsuura ; Marshall D. Perrin. 2022. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "Infrared (IR) remote sensing offers a huge range of applications, mostly addressing make-or-break issues of our century (wildfires, irrigation monitoring, etc.). Multispectral spaceborne instruments require bulky optical systems designed for a specific scientific goal and have very low revisit time. Thereby, constellations of small satellites embarking compact dual-band IR imagers are very promising solutions. We study a dual-band IR diffractive element called multilayer diffractive optical elements (MLDOE). It replaces classical diffractive lenses (DOEs) that cannot operate simultaneously in two distinct wavebands. An MLDOE design is studied using the rigorous finite difference time domain (FDTD) method. Its performance at the ”best” focal plane is deduced using free-space Fourier optics wave propagation. The presented MLDOE design has over 80% Strehl ratio in both bands, outperforming classical DOEs. Its chromatic focal shift has a negative variation, in opposition to refractive lenses, allowing efficient and compact dual-band hybrid lenses.",

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Laborde, V, Loicq, JJD & Habraken, S 2022, Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements. in LE Coyle, S Matsuura & MD Perrin (eds), Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave., 121805Q, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12180, SPIE Astronomical Telescopes + Instrumentation 2022, Montréal, Quebec, Canada, 17/07/22. https://doi.org/10.1117/12.2630169

Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements. / Laborde, Victor ; Loicq, J.J.D.; Habraken, Serge .
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave. ed. / Laura E. Coyle; Shuji Matsuura; Marshall D. Perrin. 2022. 121805Q (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12180).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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N2 - Infrared (IR) remote sensing offers a huge range of applications, mostly addressing make-or-break issues of our century (wildfires, irrigation monitoring, etc.). Multispectral spaceborne instruments require bulky optical systems designed for a specific scientific goal and have very low revisit time. Thereby, constellations of small satellites embarking compact dual-band IR imagers are very promising solutions. We study a dual-band IR diffractive element called multilayer diffractive optical elements (MLDOE). It replaces classical diffractive lenses (DOEs) that cannot operate simultaneously in two distinct wavebands. An MLDOE design is studied using the rigorous finite difference time domain (FDTD) method. Its performance at the ”best” focal plane is deduced using free-space Fourier optics wave propagation. The presented MLDOE design has over 80% Strehl ratio in both bands, outperforming classical DOEs. Its chromatic focal shift has a negative variation, in opposition to refractive lenses, allowing efficient and compact dual-band hybrid lenses.

AB - Infrared (IR) remote sensing offers a huge range of applications, mostly addressing make-or-break issues of our century (wildfires, irrigation monitoring, etc.). Multispectral spaceborne instruments require bulky optical systems designed for a specific scientific goal and have very low revisit time. Thereby, constellations of small satellites embarking compact dual-band IR imagers are very promising solutions. We study a dual-band IR diffractive element called multilayer diffractive optical elements (MLDOE). It replaces classical diffractive lenses (DOEs) that cannot operate simultaneously in two distinct wavebands. An MLDOE design is studied using the rigorous finite difference time domain (FDTD) method. Its performance at the ”best” focal plane is deduced using free-space Fourier optics wave propagation. The presented MLDOE design has over 80% Strehl ratio in both bands, outperforming classical DOEs. Its chromatic focal shift has a negative variation, in opposition to refractive lenses, allowing efficient and compact dual-band hybrid lenses.

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Laborde V, Loicq JJD, Habraken S. Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements. In Coyle LE, Matsuura S, Perrin MD, editors, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave. 2022. 121805Q. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2630169

Developing compact and innovative dual-band thermal imagers using multi-layer diffractive optical elements

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