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Photonic mid-infrared nulling for exoplanet detection on a planar chalcogenide platform

Kenchington Goldsmith, Harry-Dean; Ireland, Michael; Ma, Pan; Luther-Davies, Barry; Wang, Rongping; Norris, Barnaby R. M.; Tuthill, Peter G.; Madden, Steve

Description

The future of exoplanet detection lies in the mid-infrared (MIR). The MIR region contains the blackbody peak of both hot and habitable zone exoplanets, making the contrast between starlight and planet light less extreme. It is also the region where prominent chemical signatures indicative of life exist, such as ozone at 9.7 μm. At a wavelength of 4 μm the difference in emission between an Earth-like planet and a star like our own is 80 dB. However a jovian planet, at the same separation...[Show more]

dc.contributor.authorKenchington Goldsmith, Harry-Dean
dc.contributor.authorIreland, Michael
dc.contributor.authorMa, Pan
dc.contributor.authorLuther-Davies, Barry
dc.contributor.authorWang, Rongping
dc.contributor.authorNorris, Barnaby R. M.
dc.contributor.authorTuthill, Peter G.
dc.contributor.authorMadden, Steve
dc.contributor.editorCreech-Eakman, M.
dc.contributor.editorTuthill, P.
dc.contributor.editorMerand, A.
dc.coverage.spatialAustin, United States
dc.date.accessioned2020-02-11T23:13:22Z
dc.date.available2020-02-11T23:13:22Z
dc.date.createdJune 11-15 2018
dc.identifier.issn0277-786X
dc.identifier.urihttp://hdl.handle.net/1885/201645
dc.description.abstractThe future of exoplanet detection lies in the mid-infrared (MIR). The MIR region contains the blackbody peak of both hot and habitable zone exoplanets, making the contrast between starlight and planet light less extreme. It is also the region where prominent chemical signatures indicative of life exist, such as ozone at 9.7 μm. At a wavelength of 4 μm the difference in emission between an Earth-like planet and a star like our own is 80 dB. However a jovian planet, at the same separation exhibits 60 dB of contrast, or only 20 dB if it is hot due to its formation energy or being close to its host star. A two dimensional nulling interferometer, made with chalcogenide glass, has been measured to produce a null of 20 dB depth, limited by scattered light. Measures to increase the null depth to the theoretical limit of 60 dB are discussed.
dc.description.sponsorshipThis research was supported by the Australian Research Council (ARC) Centre of Excellence for Ultrahigh bandwidth Devices for Optic Systems (CUDOS) project CE110001018.
dc.format.extent12 pages
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherSPIE
dc.relation.ispartofseries2018 Optical and Infrared Interferometry and Imaging VI
dc.rights© 2018 SPIE
dc.sourceProceedings of SPIE - The International Society for Optical Engineering
dc.subjectExoplanet, Interferometery, Nulling, Multimode Interference coupler
dc.titlePhotonic mid-infrared nulling for exoplanet detection on a planar chalcogenide platform
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume10701
dc.date.issued2018-07-09
local.identifier.absfor020102 - Astronomical and Space Instrumentation
local.identifier.absfor020504 - Photonics, Optoelectronics and Optical Communications
local.identifier.ariespublicationu3102795xPUB1748
local.publisher.urlhttps://spie.org/
local.type.statusPublished Version
local.contributor.affiliationKenchington Goldsmith, Harry-Dean, College of Science, The Australian National University
local.contributor.affiliationIreland, Michael, College of Science, The Australian National University
local.contributor.affiliationMa, Pan, College of Science, The Australian National University
local.contributor.affiliationLuther-Davies, Barry, College of Science, The Australian National University
local.contributor.affiliationWang, Rongping, Ningbo University
local.contributor.affiliationNorris, Barnaby R M, University of Sydney
local.contributor.affiliationTuthill, Peter G, University of Sydney
local.contributor.affiliationMadden, Steve, College of Science, The Australian National University
dc.relationhttp://purl.org/au-research/grants/arc/CE110001018
local.identifier.essn1996-756X
local.bibliographicCitation.startpage107011E
local.identifier.doi10.1117/12.2311904
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:32:12Z
local.identifier.scopusID2-s2.0-85052862710
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/0277-786X/ Author can archive publisher's version/PDF. Publisher's version/PDF may be used (preferred) (Sherpa/Romeo as of 12/2/2020). http://spie.org/publications/journals/guidelines-for-authors Harry-Dean Kenchington Goldsmith, Michael J. Ireland, Pan Ma, Barry Luther-Davies, Rongping Wang, Barnaby Norris, Peter Tuthill, and Stephen J. Madden "Photonic mid-infrared nulling for exoplanet detection on a planar chalcogenide platform", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107011E (9 July 2018); https://doi.org/10.1117/12.2311904 Copyright 2018 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited (Publisher journal website as of 12/2/2020)
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