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Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

Laser & Photonics Reviews
Over the past fifty years, wavefront sensing technology has continuously evolved from basic techniques to high‐precision systems, serving as a core methodology in adaptive optics (AO).
Rundong Fan, Zichao Wang, Pei Li, Lei Huang   +3 more
semanticscholar   +1 more source

The Giant Magellan Telescope’s high contrast adaptive optics testbed: NGAO wavefront sensing and control laboratory results

Astronomical Telescopes + Instrumentation
The Natural Guide-star Adaptive Optics (NGAO) mode of the Giant Magellan Telescope (GMT) is one of the two diffraction-limited AO modes under development by GMTO and its partner institutions.
F. Quirós-Pacheco, A. Bouchez, C. Plantet, Bo Xin, Jordi Molgó, William Schoenell, Alfio Puglisi, Fabio Rossi, Patricio Schurter, J. Haddad, R. Demers, Simone Esposito, A. Cheffot, Nicolò Azzaroli, L. Carbonaro, T. Lapucci, E. Pinna, Laird M. Close, S. Haffert, M. Kautz, J. Males, A. Mcleod, A. Hedglen, V. Gasho, M. V. van Dam   +24 more
semanticscholar   +1 more source

Single-shot phase diversity wavefront sensing in deep turbulence via metasurface optics

Nature Photonics
Free-space optical communication systems offer high-bandwidth, secure communication with minimal capital costs. Adaptive optics are typically added to these systems to decrease atmospheric channel losses; however, the performance of traditional adaptive ...
Arturo Martin Jimenez, Marc Baltes, Jackson Cornelius, Neset Aközbek, Zachary J. Coppens   +4 more
semanticscholar   +1 more source

A learning-based approach to event-based Shack-Hartmann wavefront sensing

Optical Engineering + Applications
We present a novel deep learning-based framework for event-based Shack-Hartmann wavefront sensing. This approach leverages a convolutional neural network (CNN) to directly reconstruct high-resolution wavefronts from event-based sensor data.
Matthew R. Ziemann, Isabelle Rathbun, Christopher A. Metzler   +2 more
semanticscholar   +1 more source

Comparison of wavefront sensing devices

Ophthalmology Clinics of North America, 2004
Wavefront measurement is an emerging technology that can evaluate low-order and high-order aberrations. This review compiles the different wavefront sensing devices and compares the most popular Hartmann-Shack aberrometers.
Kerry D, Solomon, Luis E, Fernández de Castro, Helga P, Sandoval, David T, Vroman   +3 more
openaire   +2 more sources

Wavefront sensing with an axicon

Optics Letters, 2011
The use of a large apex-angle axicon for common-path interferometric wavefront sensing is proposed. The approach is a variant of point-diffraction interferometry bearing similarities to pyramidal wavefront sensing. A theoretical basis for wavefront sensing with an axicon is developed, and the outcomes of numerical simulations are compared to ...
Brian, Vohnsen, Sara, Castillo, Diego, Rativa   +2 more
openaire   +2 more sources

A reference wavefront for wavefront sensing instruments

Workshop on Optical Fabrication and Testing, 1986
A reference light source (RLS) was designed to allow the measurement and removal of system wavefront errors in wavefront sensing instruments. The wavefront of the RLS is produced by collimating and re-focussing the output of a laser diode onto a 1 micron pinhole aperture.
Lars A. Selberg, Bruce E. Truax
openaire   +1 more source

The optics of wavefront sensing

Ophthalmology Clinics of North America, 2004
This article reviews the fundamental principles by which wavefront aberrometers measure ocular aberrations. Three different ways of interpreting aberration measurements are described in terms of wavefront phase, slope, and curvature. Although curvature is the more familiar concept from geometrical optics, the wave optics concept of wavefront phase is ...
openaire   +2 more sources

Synthetic aperture wavefront sensing

Optical Engineering, 2013
We propose the synthetic aperture wavefront sensing approach. It is based on acquiring several sets of measurements of the wavefront slopes by displacing sequentially the microlens array with respect to the unknown wavefront. These measurements are stacked together and processed as if obtained with a single-sampling array with an effective number of ...
Salvador Bará, Justo Arines, Eliseo Pailos   +2 more
openaire   +1 more source

Prism configurations for wavefront sensing

Applied Optics, 1990
This Technical Note mentions two prism configurations for wavefront sensing, both stimulated by works of Roddier. One implements an interferometric pupil-plane sensor, the other a noninterferometric wavefront curvature sensor.
openaire   +2 more sources