Vortex Fiber Nulling for Exoplanet Observations: First Direct Detection of M Dwarf Companions around HIP 21543, HIP 94666, and HIP 50319

D Echeverri, JW Xuan, JD Monnier… - The Astrophysical …, 2024 - iopscience.iop.org
Vortex fiber nulling (VFN) is a technique for detecting and characterizing faint companions at
small separations from their host star. A near-infrared (∼ 2.3 μm) VFN demonstrator mode …

Achieving Quantum Limits of Exoplanet Detection and Localization

N Deshler, S Haffert, A Ashok - arXiv preprint arXiv:2403.17988, 2024 - arxiv.org
Discovering exoplanets in orbit around distant stars via direct imaging is fundamentally
impeded by the high dynamic range between the star and the planet. Coronagraphs strive to …

JWST-TST High Contrast: Achieving Direct Spectroscopy of Faint Substellar Companions Next to Bright Stars with the NIRSpec Integral Field Unit

JB Ruffio, MD Perrin, KKW Hoch… - The Astronomical …, 2024 - iopscience.iop.org
The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly
imaged exoplanets from 3 to 5 μm at moderate spectral resolution (R∼ 2700) and thereby …

Efficient ultra-broadband low-resolution astrophotonic spectrographs

P Gatkine, G Sercel, N Jovanovic, R Broeke… - Optics …, 2024 - opg.optica.org
Broadband low-resolution near-infrared spectrographs in a compact form are crucial for
ground-and space-based astronomy and other fields of sensing. Astronomical spectroscopy …

Geometric-phase-based phase-knife mask for stellar nulling and coronagraphy

E Serabyn, K Liewer, G Ruane - Optics Express, 2024 - opg.optica.org
Exoplanets can be detected very close to stars using single-mode cross-aperture nulling
interferometry, a photonic technique that relies on the inability of an anti-symmetric stellar …

Current laboratory performance of starlight suppression systems, and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities

B Mennesson, R Belikov, E Serabyn, G Ruane… - arXiv preprint arXiv …, 2024 - arxiv.org
We summarize the current best polychromatic (10 to 20% bandwidth) contrast performance
demonstrated in the laboratory by different starlight suppression approaches and systems …

Laboratory demonstration of a Photonic Lantern Nuller in monochromatic and broadband light

Y Xin, D Echeverri, N Jovanovic… - Journal of …, 2024 - spiedigitallibrary.org
Photonic lantern nulling (PLN) is a method for enabling the detection and characterization of
close-in exoplanets by exploiting the symmetries of the ports of a mode-selective photonic …