Results 51 to 60 of about 4,053 (141)
PhotonicsAtmospheric turbulence introduces distortions to the wavefront of propagating optical radiation. It causes image resolution degradation in astronomical telescopes and significantly reduces the power density of radiation on the target in focusing ...
Ilya Galaktionov, Vladimir Toporovsky
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Wavefront sensor and wavefront corrector matching in adaptive optics
Optics Express, 2007 Matching wavefront correctors and wavefront sensors by minimizing the condition number and mean wavefront variance is proposed. The particular cases of two continuous-sheet deformable mirrors and a Shack-Hartmann wavefront sensor with square packing geometry are studied in the presence of photon noise, background noise and electronics noise.
openaire +2 more sources
Adaptive optics design for high-energy kW-class multi-slab laser amplifiers
High Power Laser Science and EngineeringWe demonstrate real-time wavefront correction in a high-energy high-average-power DiPOLE100/Bivoj laser using adaptive optics. A bimorph deformable mirror and a Shack–Hartmann wavefront sensor reduced wavefront error 10-fold and improved the Strehl ratio
Tomáš Paliesek +4 more
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Light: Advanced ManufacturingThe widely used Shack–Hartmann wavefront sensor (SHWFS) is a wavefront measurement system. Its measurement accuracy is limited by the reference wavefront used for calibration and also by various residual errors of the sensor itself.
Yi He +5 more
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An Efficient Pipeline Wavefront Phase Recovery for the CAFADIS Camera for Extremely Large Telescopes
Sensors, 2009 In this paper we show a fast, specialized hardware implementation of the wavefront phase recovery algorithm using the CAFADIS camera. The CAFADIS camera is a new plenoptic sensor patented by the Universidad de La Laguna (Canary Islands, Spain ...
Eduardo Magdaleno +2 more
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Plenoptic wavefront sensor with scattering pupil
Optics Express, 2014 We consider a wavefront sensor combining scattering pupil with a plenoptic imager. Such a sensor utilizes the same reconstruction principle as the Hartmann-Shack sensor, however it is free from the ambiguity of the spot location caused by the periodic structure of the sensor matrix, and allows for wider range of measured aberrations.
Gleb, Vdovin +2 more
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Study of Point Scanning Detection Mechanisms for Vibration Signals with Wavefront Sensors
PhotonicsSeismic wave laser remote sensing is extensively employed in seismic monitoring and resource exploitation. This work establishes a vibration signal point scanning detection system utilizing wavefront sensors, leveraging their high resolution, array ...
Quan Luo +7 more
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Linearity of the pyramid wavefront sensor
Optics Express, 2006 The pyramid wavefront sensor is very similar to the Fourier knife-edge test, but employs dynamic modulation to quantify the phase derivative. For circular modulation, we compare approximate geometrical optics calculations, more exact diffraction calculations, and experimental results.
Anna, Burvall +3 more
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Widefield wavefront sensor for multidirectional peripheral retinal scanning. [PDF]
Biomed Opt Express, 2023 Pusti D +5 more
europepmc +1 more source
Retinal adaptive optics imaging with a pyramid wavefront sensor. [PDF]
Biomed Opt Express, 2021 Brunner E +8 more
europepmc +1 more source