Lorenzo König
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View article: A socio-demographic study of the exoplanet direct imaging community II
A socio-demographic study of the exoplanet direct imaging community II Open
Recognizing and addressing under-representation, exclusion, and problematic behavior within astronomy and astrophysics is crucial. In 2019, a survey was conducted at the Spirit of Lyot conference to evaluate the socio-demographics and well…
View article: Microstructured vortex and azimuthal cosine phase mask design for high-contrast imaging
Microstructured vortex and azimuthal cosine phase mask design for high-contrast imaging Open
View article: Design and prototyping of broadband metasurface scalar phase masks for high-contrast imaging
Design and prototyping of broadband metasurface scalar phase masks for high-contrast imaging Open
editorial reviewed
View article: Design, manufacturing and prototype testing of the METIS ring apodizer
Design, manufacturing and prototype testing of the METIS ring apodizer Open
editorial reviewed
View article: METIS high-contrast imaging: from final design to manufacturing and testing
METIS high-contrast imaging: from final design to manufacturing and testing Open
The Mid-infrared ELT Imager and Spectrograph (METIS) is one of the first-generation scientific instruments for the ELT, built under the supervision of ESO by a consortium of research institutes across and beyond Europe. Designed to cover t…
View article: METIS high-contrast imaging: from final design to manufacturing and testing
METIS high-contrast imaging: from final design to manufacturing and testing Open
Instrumentation
View article: Making the diamond vortex phase masks for the METIS instrument
Making the diamond vortex phase masks for the METIS instrument Open
View article: Photonic-structure optimization using highly data-efficient deep learning: Application to nanofin and annular-groove phase masks
Photonic-structure optimization using highly data-efficient deep learning: Application to nanofin and annular-groove phase masks Open
peer reviewed
View article: Prospects for metasurfaces in exoplanet direct imaging systems: from principles to design
Prospects for metasurfaces in exoplanet direct imaging systems: from principles to design Open
editorial reviewed
View article: Visible extreme adaptive optics on extremely large telescopes: towards detecting oxygen in Proxima Centauri b and analogs
Visible extreme adaptive optics on extremely large telescopes: towards detecting oxygen in Proxima Centauri b and analogs Open
International audience
View article: Metasurface-based scalar vortex phase mask in pursuit of 1e-10 contrast
Metasurface-based scalar vortex phase mask in pursuit of 1e-10 contrast Open
editorial reviewed
View article: Integrated photonic-based coronagraphic systems for future space telescopes
Integrated photonic-based coronagraphic systems for future space telescopes Open
International audience
View article: Integrated photonic-based coronagraphic systems for future space telescopes
Integrated photonic-based coronagraphic systems for future space telescopes Open
The detection and characterization of Earth-like exoplanets around Sun-like stars is a primary science motivation for the Habitable Worlds Observatory. However, the current best technology is not yet advanced enough to reach the 10^-10 con…
View article: Photonic Structures Optimization Using Highly Data-Efficient Deep Learning: Application To Nanofin And Annular Groove Phase Masks
Photonic Structures Optimization Using Highly Data-Efficient Deep Learning: Application To Nanofin And Annular Groove Phase Masks Open
Metasurfaces offer a flexible framework for the manipulation of light properties in the realm of thin film optics. Specifically, the polarization of light can be effectively controlled through the use of thin phase plates. This study aims …
View article: Visible extreme adaptive optics on extremely large telescopes: Towards detecting oxygen in Proxima Centauri b and analogs
Visible extreme adaptive optics on extremely large telescopes: Towards detecting oxygen in Proxima Centauri b and analogs Open
Looking to the future of exo-Earth imaging from the ground, core technology developments are required in visible extreme adaptive optics (ExAO) to enable the observation of atmospheric features such as oxygen on rocky planets in visible li…
View article: Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory
Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory Open
NASA is engaged in planning for a Habitable Worlds Observatory (HabWorlds ), a coronagraphic space mission to detect rocky planets in habitable zones and establish their habitability. Surface liquid water is central to the definition of pl…
View article: Data for "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory"
Data for "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory" Open
Data for the paper on "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory"
View article: Data for "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory"
Data for "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory" Open
Data for the paper on "Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory"
View article: A Metasurface-Based Scalar Vortex Phase Mask Design
A Metasurface-Based Scalar Vortex Phase Mask Design Open
The technique best suited for direct imaging of exoplanets is high contrast direct imaging using a coronagraph. In particular, the vortex coronagraph has proven to be one of the most promising approaches for imaging Earth-like planets with…
View article: Optimal design of the annular groove phase mask central region
Optimal design of the annular groove phase mask central region Open
Vortex phase masks have been shown to be an efficient means to reduce the blinding stellar light in high-contrast imaging instruments. Once placed at the focal plane of the telescope, the helical phase ramp of a vortex phase mask diffracts…
View article: Development of next generation Vortex Phase Masks
Development of next generation Vortex Phase Masks Open
View article: Vortex phase masks of topological charge 4 and higher with diamond subwavelength gratings
Vortex phase masks of topological charge 4 and higher with diamond subwavelength gratings Open
High contrast imaging at small inner working angles can be achieved using a vector vortex coronagraph in the focal plane of the telescope providing a helical phase ramp with a singularity at its center. The form birefringence of full-diamo…