Results 11 to 20 of about 239,453 (286)
Low Spatio-Temporal Frequency Wavefront Aberration Correction Method Based on a Movable Secondary Mirror [PDF]
IEEE Photonics JournalA low frequency wavefront aberration correction method for solar telescopes based on secondary mirror movement is proposed to correct dynamic wavefront aberration during the operation of solar telescope.
Yawei Xiao +4 more
doaj +2 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
Spatial Light Modulator for wavefront correction [PDF]
Ghosh, Ajay and Choudhury, Debesh eds., proceedings of
International Conference on Trends in Optics and Photonics., March, 2009,
Kolkata, India., pp. 318 - 330, 2009 We present a liquid crystal method of correcting the phase of an aberrated wavefront using a spatial light modulator. A simple and efficient lab model has been demonstrated for wavefront correction. The crux of a wavefront correcting system in an adaptive optics system lies in the speed and the image quality that can be achieved.
Vyas, Akondi +3 more
arxiv +3 more sources
Adaptive Optics Correction of the Wavefront Distortions Induced by Segments Misalignment in Extremely Large Telescope [PDF]
SPIE 6267 - 75 Orlando May 2006, 2006 The capability of the adaptive optics to correct for the segmentation error is analyzed in terms of the residual wavefront RMS and the power spectral density of the phase. The analytical model and the end-to-end simulation give qualitatively equal results justifying the significance of the geometrical matching between segmentation geometry and the ...
Verinaud, Christophe, Yaitskova, Natalia
arxiv +4 more sources
Kalman filter estimation for focal plane wavefront correction [PDF]
SPIE Proceedings, 2012 14 pages, 9 figures, SPIE Astronomical Telescopes and Instrumentation 2012 conference proceedings.
Tyler D. Groff, N. Jeremy Kasdin
openaire +5 more sources
Hard X-ray wavefront correction via refractive phase plates made by additive and subtractive fabrication techniques. [PDF]
J Synchrotron Radiat, 2020 Seiboth F +12 more
europepmc +3 more sources
Filtered Influence Function of Deformable Mirror for Wavefront Correction in Laser Systems
Photonics, 2021 An influence function filtering method (IFFM) is presented to improve the wavefront correction capability in laser systems by curbing the correction performance degradation resulted from the IF measurement noise.
Yamin Zheng +5 more
doaj +1 more source
IEEE Photonics Journal, 2021 Wavefront reconstruction and correction under strong turbulence has become a crucial issue for adaptive optics systems. An approach using a plenoptic sensor has attracted high attention recently.
Jintian Hu +5 more
doaj +1 more source
Applied Sciences, 2023 In adaptive optics systems, the precision wavefront sensor determines the closed-loop correction effect. The accuracy of the wavefront sensor is severely reduced when light energy is weak, while the real-time performance of wavefront sensorless adaptive ...
Bo Chen +4 more
doaj +1 more source
Highly Stable Spatio-Temporal Prediction Network of Wavefront Sensor Slopes in Adaptive Optics
Sensors, 2023 Adaptive Optics (AO) technology is an effective means to compensate for wavefront distortion, but its inherent delay error will cause the compensation wavefront on the deformable mirror (DM) to lag behind the changes in the distorted wavefront ...
Ning Wang +6 more
doaj +1 more source