Adaptive optical microscopy via virtual-imaging-assisted wavefront sensing for high-resolution tissue imaging [PDF]
PhotoniX, 2022 Adaptive optics (AO) is a powerful tool for optical microscopy to counteract the effects of optical aberrations and improve the imaging performance in biological tissues.
Zhou Zhou +8 more
openalex +2 more sources
Integrated coronagraphy and wavefront sensing with the PIAACMC [PDF]
, 2023 Uncorrected wavefront errors create speckle noise in high-contrast observations at small inner-working angles. These speckles can be sensed and controlled by using coronagraph integrated wavefront sensors. Here, we will present how the Phase Induced Amplitude Apodized Complex Mask Corongraph (PIAACMC) can be integrated with both a Self-Coherent Camera (
Sebastiaan Y. Haffert +2 more
openalex +2 more sources
Pulse-to-pulse wavefront sensing at free-electron lasers using ptychography [PDF]
J Appl Crystallogr, 2020 Simone Sala +9 more
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Tracking Length and Differential-Wavefront-Sensing Signals from Quadrant Photodiodes in Heterodyne Interferometers with Digital Phase-Locked-Loop Readout [PDF]
, 2020 We propose a new method to track signals from quadrant photodiodes (QPD) in heterodyne interferometers that employ digital phase-locked loops for phase readout.
Gerhard Heinzel +4 more
openalex +3 more sources
On-sky verification of Fast and Furious focal-plane wavefront sensing: Moving forward toward controlling the island effect at Subaru/SCExAO [PDF]
Astronomy & Astrophysics, 2020 Context. High-contrast imaging (HCI) observations of exoplanets can be limited by the island effect (IE). The IE occurs when the main wavefront sensor (WFS) cannot measure sharp phase discontinuities across the telescope’s secondary mirror support ...
S. P. Bos +10 more
openalex +3 more sources
Using the generalised-optical differentiation wavefront sensor for laser guide star wavefront sensing [PDF]
arXiv, 2020 Laser guide stars (LGS) are used in many adaptive optics systems to extend sky coverage. The most common wavefront sensor used in combination with a LGS is a Shack-Hartmann wavefront sensor (SHWFS). The Shack-Hartmann has a major disadvantage for extended source wavefront sensing because it directly samples the image.
Sebastiaan Y. Haffert +2 more
openalex +2 more sources
Differential wavefront sensing and control using radio-frequency optical demodulation [PDF]
, 2021 Differential wavefront sensing is an essential technique for optimising the performance of many precision interferometric experiments. Perhaps the most extensive application of this is for alignment sensing using radio-frequency beats measured with quadrant photodiodes.
Daniel D. Brown +4 more
openalex +2 more sources
Focal-plane wavefront sensing with photonic lanterns I: theoretical framework [PDF]
Journal of the Optical Society of America B, 2022 The photonic lantern (PL) is a tapered waveguide that can efficiently couple light into multiple single-mode optical fibers. Such devices are currently being considered for a number of tasks, including the coupling of telescopes and high-resolution ...
Jonathan Lin +6 more
semanticscholar +1 more source
The space coronagraph optical bench (SCoOB): 2. Wavefront sensing and control in a vacuum-compatible coronagraph testbed for spaceborne high-contrast imaging technology [PDF]
Astronomical Telescopes + Instrumentation, 2022 The 2020 Decadal Survey on Astronomy and Astrophysics endorsed space-based high contrast imaging for the detection and characterization of habitable exoplanets as a key priority for the upcoming decade.
Kyle Van Gorkom +11 more
semanticscholar +1 more source
Closed-loop wavefront sensing and correction in the mouse brain with computed optical coherence microscopy [PDF]
Biomed Opt Express, 2021 Siyang Liu +6 more
openalex +2 more sources