Broadband mid-infrared directional and multimode interference couplers in GLS glass fabricated using femtosecond laser direct-writing

T. Gretzinger, S. Gross, A. Arriola, T. T. Fernandez, D. Strixner, J. Tepper, L. Labadie, M. J. Withford

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Understanding how solar systems form and determining how unique Earth is within the Universe are some of modern astronomy's biggest quests. To date, the majority of exoplanets have been discovered using indirect techniques. Unlike indirect techniques, direct imaging separates the light from the host star and orbiting planet, enabling measurement of an exoplanet's composition for instance. Yet, direct imaging is challenging due to the small angular separation between the objects and the overwhelming glare of the host star compared to the dim planet. A powerful technique that can provide high angular resolution and contrast is nulling interferometry [1]. Astronomical interferometry has tremendously benefited from using photonic technologies developed for telecommunication, such as optical fibres and integrated photonics to provide spatial filtering of the stellar light for improved interferometric contrast as well as robustness to environmental influences [2]. However, telecommunication technology is not compatible with the mid-infrared, a spectral region of particular interest for detecting young exoplanets.

Original languageEnglish
Title of host publicationCLEO/Europe-EQEC 2019
Subtitle of host publicationConference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1
Number of pages1
ISBN (Electronic)9781728104690
ISBN (Print)9781728104706
DOIs
Publication statusPublished - Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Publication series

NameOptics InfoBase Conference Papers
VolumePart F140-CLEO_Europe 2019

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
CountryGermany
CityMunich
Period23/06/1927/06/19

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