8 papers · 1 filter
Initial modeling and testbed feasibility studies of WaveDriver: a laser guide star AO system for HWO
Dominic F. Sanchez, Benjamin L. Gerard, Peter Waswa +16
The Habitable Worlds Observatory (HWO) will require greater wavefront stability than achieved by JWST, pushing conventional telescope architectures to picometer-level…
On-sky results from REDWOODS, a platform at Lick/ShaneAO for testing second stage AO technologies
Benjamin L. Gerard, Dominic F. Sanchez, Aditya R. Sengupta +11
REDWOODS is a new sub-testbed within the Shane Adaptive Optics (AO) system at Lick observatory, developed to test second stage AO wavefront sensing and control technologies, includ…
Demonstrating the integration of a photonic lantern with an all-fiber-based nulling interferometer
Jordan Diaz, Rebecca Jensen-Clem, Philip M. Hinz +12
High-contrast imaging of Solar System scale exoplanets and protoplanets demands advancements in instrumentation to access deeper starlight suppression at smaller angular separation…
Laboratory characterization of a multi-photonic lantern optical waveguide using off-axis holography
Aditya R. Sengupta, Benjamin L. Gerard, Dominic Sanchez +7
Photonic lanterns (PLs) are waveguides that convert multi-mode input light to single-mode outputs. Wavefront sensing (WFS) and spectroscopy using a PL have been demonstrated, but P…
Experimentally-determined performance limits for joint imaging and wavefront sensing with a photonic lantern
Aditya R. Sengupta, Vincent Chambouleyron, Rebecca Jensen-Clem +16
The photonic lantern (PL) is a focal-plane wavefront sensor (WFS) that can be used for second-stage control of extreme adaptive optics (AO) systems. While the number of sensed mode…
WaveDriver: a Laser Guide Star AO System for HWO
Benjamin L. Gerard, Alex Geringer-Sameth, Aditya R. Sengupta +7
Habitable Worlds Observatory (HWO) presents a key challenge for technology development in the coming years, requiring a more stable system than \textit{JWST}. WaveD…
PEEPSS: Photonic-Enabled ExoPlanet Spectroscopic Sensor for the Habitable Worlds Observatory
Genevieve Markees, Stephen S. Eikenberry, Rodrigo Amezcua-Correa +5
The next few years will be critical for technology development for Habitable Worlds Observatory (HWO) in its mission to search for and characterize extrasolar planets. To achieve i…
Control algorithms for dual-wavefront sensor single-conjugate adaptive optics
Aditya R. Sengupta, Lisa A. Poyneer, Benjamin L. Gerard +2
High-contrast imaging systems using active control with adaptive optics (AO) are often limited by non-common path (NCP) aberrations that are seen only at the final science image. A…