Results 191 to 200 of about 5,696 (229)
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A discussion of two wavefront aberration correction procedures
Ultrasonic Imaging, 1992This review paper discusses the basic properties of two adaptive signal processing procedures for dealing with weak scattering in a phased array transducer system. A fundamental improvement in the lateral resolution of ultrasonic echo scanners will result if the weight vector of a large phased array transducer can be modified to account for distortion
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EXACT WAVEFRONT CORRECTION IN ADAPTIVE OPTICS
IFAC Proceedings Volumes, 2005Abstract In this work we consider an adaptive optical system in which a deformable mirror is controlled to compensate for random wavefront disturbances. For most systems of this type, the shape of the mirror is taken as a linear function of the wavefront error, leading to satisfactory results in linear regimes.
Pierre Le Gall, Lionel Rosier
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Liquid deformable mirror for high-order wavefront correction
Optics Letters, 2006We propose and demonstrate a novel liquid deformable mirror, based on electrocapillary actuation, for high-order wavefront correction. The device consists of a two-dimensional array of vertically oriented microchannels filled with two immiscible liquids, an aqueous electrolyte, and a viscous dielectric liquid, where the dielectric liquid overfills the ...
Vuelban, E.M. (author) +2 more
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Analyzing multi-conjugate wavefront shaping corrections
Optica Imaging Congress 2025 (3D, DH, COSI, IS, pcAOP,RadIT)Multi-conjugate wavefront shaping systems attempt to correct scattering through a volumetric aberration using multiple planar corrections. We study how many layers are needed and what field-of-view can be corrected with a small number of layers.
Marina Alterman, Anat Levin
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Static Wavefront Correction By Linnik Interferometry
SPIE Proceedings, 1989We consider optical systems with residual peak to valley wavefront errors below 150 nm. The interference figure for λ = 633 am may then be adjusted and photographed as to hold out at every point of the image of the pupil a one to one rolaionship betwonn the optical density of the interferogram and the magnitude of the wavefront error.
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
Compressive wavefront correction with Bessel beams
Laser Beam Shaping XXII, 2022Dennis Scheidt, Pedro A. Quinto-Su
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Correction of Distorted Wavefront Based on Direct Wavefront Gradient Algorithm
Laser & Optoelectronics Progress, 2014许泽帅 Xu Zeshuai +4 more
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