6 papers
Empirical verification of principal mode orthogonality and relative phase calibration in photonic lanterns
Adam K. Taras, Barnaby R. M. Norris, Christopher Betters +5
The paper experimentally characterizes the principal modes of a photonic lantern using digital off‑axis holography, showing they are highly orthogonal and proposing ways to use thi…
Overcoming the low signal-to-noise problem for hybrid mode-selective photonic lantern-based wavefront correction using machine learning
Nathan K Long, Barnaby Norris, Daniel S Dahl +10
Hybrid mode-selective photonic lanterns transform an input complex point-spread function into several single-mode outputs, where a selected core feeds the fundamental mode to a pho…
Seidr update: photonic 'black magic' for high-contrast interferometry using kernel-nulling and photonic lanterns
Nathan K Long, Daniel S Dahl, Christopher H Betters +13
Seidr is a new interferometric beam combiner within the Asgard Suite, utilizing infrastructure common to the BIFROST instrument at the Very Large Telescope Interferometer. Seidr co…
The TOLIMAN mission: A low-cost space telescope for high precision narrow-angle astrometry
Peter Tuthill, Christopher Betters, Max Charles +29
The TOLIMAN project is engaged with the construction, launch and operation of a low-cost space telescope of unorthodox optical design. Its primary science goal targets an exhaustiv…
Illuminating the lantern: coherent, spectro-polarimetric characterisation of a multimode converter
Adam K. Taras, Barnaby R. M. Norris, Christopher Betters +4
While photonic lanterns efficiently and uniquely map a set of input modes to single-mode outputs (or vice versa), the optical mode transfer matrix of any particular fabricated devi…
Jewel Optics I: non-redundant Fizeau beam combination without the guilt
Adam K. Taras, Grace Piroscia, Peter Tuthill
The enduring technique of aperture masking interferometry, now more than 150 years old, is still widely practised today for it opens a window of high angular resolution astronomy t…