Results 11 to 20 of about 30,065 (244)
Adaptive wavefront correction in two-photon microscopy using coherence-gated wavefront sensing [PDF]
Proceedings of the National Academy of Sciences, 2006 The image quality of a two-photon microscope is often degraded by wavefront aberrations induced by the specimen. We demonstrate here that resolution and signal size in two-photon microcopy can be substantially improved, even in living biological specimens, by adaptive wavefront correction based on sensing the wavefront of coherence-gated backscattered ...
Rückel, M., Mack-Bucher, J., Denk, W.
exaly +10 more sources
Sensors, 2020 X-ray single-grating interferometry was applied to conduct accurate wavefront corrections for hard X-ray nanofocusing mirrors. Systematic errors in the interferometer, originating from a grating, a detector, and alignment errors of the components, were ...
Jumpei Yamada +6 more
doaj +3 more sources
Adaptive wavefront correction structured illumination holographic tomography. [PDF]
Sci Rep, 2019 AbstractIn this study, a novel adaptive wavefront correction (AWC) technique is implemented on a compactly developed structured illumination holographic tomography (SI-HT) system. We propose a mechanical movement-free compact scanning architecture for SI-HT systems with AWC, implemented by designing and displaying a series of computer-generated ...
Balasubramani V +3 more
europepmc +4 more sources
Combined hardware and computational optical wavefront correction. [PDF]
Biomed Opt Express, 2018 In many optical imaging applications, it is necessary to overcome aberrations to obtain high-resolution images. Aberration correction can be performed by either physically modifying the optical wavefront using hardware components, or by modifying the wavefront during image reconstruction using computational imaging. Here we address a longstanding issue
South FA +5 more
europepmc +3 more sources
Iterative linear focal-plane wavefront correction [PDF]
Journal of the Optical Society of America A, 2013 We propose an efficient approximation to the nonlinear phase diversity (PD) method for wavefront reconstruction and correction from intensity measurements with potential of being used in real-time applications. The new iterative linear phase diversity (ILPD) method assumes that the residual phase aberration is small and makes use of a first-order ...
Smith, C.S. (author) +6 more
openaire +5 more sources
Wavefront Correction in Vacuum of SULF-1PW Laser Beamline
Photonics, 2022 The focusing quality of high peak power lasers plays a crucial role in laser wakefield electron acceleration investigations. We report here an improvement in the focusing quality of the SULF-1PW laser beamline, planning to drive and generate 5~10 GeV ...
Fenxiang Wu +10 more
doaj +1 more source
Impact of Pupil Aberrations on Wavefront Manipulation [PDF]
EPJ Web of Conferences, 2021 A systematic and quantitative analysis is given of the impact of pupil aberrations on the imaging performance in wavefront manipulation applications using adaptive optical elements.
Nobis Thomas
doaj +1 more source
Sensors, 2020 In adaptive optics (AO), multiple different incident wavefronts correspond to a same far-field intensity distribution, which leads to a many-to-one mapping.
Xuejing Qiu +4 more
doaj +1 more source
Ground-layer wavefront reconstruction from multiple natural guide stars [PDF]
, 2007 Observational tests of ground layer wavefront recovery have been made in open loop using a constellation of four natural guide stars at the 1.55 m Kuiper telescope in Arizona.
Athey A. +17 more
core +3 more sources
Aberration corrections for free-space optical communications in atmosphere turbulence using orbital angular momentum states [PDF]
, 2011 The effect of atmosphere turbulence on light's spatial structure compromises the information capacity of photons carrying the Orbital Angular Momentum (OAM) in free-space optical (FSO) communications.
Ding, J. +4 more
core +1 more source