Results 181 to 190 of about 145,574 (223)

Ptychographic wavefront cameras

Optics Letters
We introduce a snapshot wavefront camera capable of reconstructing the complex field of an object with near quantum-limited accuracy. This system incorporates a diffraction grating at the entrance aperture and an array of cameras positioned to align with the grating orders, capturing the field with varying impulse responses.
Ni Chen, David Brady
openaire   +2 more sources

Wavefront guided and custom wavefront refractive surgery

Acta Ophthalmologica, 2010
AbstractAbstract not ...
openaire   +1 more source

Nonparametric narrowband wavefront estimation from wavefront gradients

IEEE Transactions on Signal Processing, 1999
The wavefield sampled by a two-dimensional (2-D) planar array can he characterized by a delayed signal. This correspondence investigates the problem of the nonparametric estimation of the delay function (or wavefront) when the waveform is narrowband. The wavefront is estimated by integrating the local estimates of the differential time of delay (TOD ...
openaire   +1 more source

Diverse terahertz wavefront manipulations empowered by the spatially interleaved metasurfaces

Science China Information Sciences, 2023
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Silei Wang, Mengyao Li, Yating Zhang, Yan Zhang, Jianquan Yao   +8 more
semanticscholar   +1 more source

A comparison of wavefront-optimized and wavefront-guided ablations

Current Opinion in Ophthalmology, 2009
Optimized aspherical as well as custom wavefront-guided treatments attempt to reduce the induction of visually disturbing aberrations than can occur with conventional spherocylindrical corneal ablation. This review highlights a comparison of the advances and limitations of the two treatments.Optimized aspherical as well as wavefront-guided corneal ...
Elliott H, Myrowitz, Roy S, Chuck
openaire   +2 more sources

Wavefront shaping in complex media with a 350 kHz modulator via a 1D-to-2D transform

Nature Photonics, 2018
Controlling the propagation and interaction of light in complex media has sparked major interest in the past few years. Unfortunately, spatial light modulation devices suffer from limited speed, which precludes real-time applications such as imaging in ...
O. Tzang, E. Niv, Sakshi Singh, S. Labouesse, G. Myatt, R. Piestun   +5 more
semanticscholar   +1 more source

Effect of Activation Wavefront on Electrogram Characteristics During Ventricular Tachycardia Ablation.

Circulation: Arrhythmia and Electrophysiology, 2019
Background Catheter ablation of ventricular tachycardia (VT) in structural heart disease is challenging because of noninducibility or hemodynamic compromise. Ablation often depends on elimination of local abnormal ventricular activities (LAVAs) but which
Claire A. Martin, Ruairidh Martin, Philippe Maury, Christian Meyer, Tom Wong, Corentin Dallet, R. Shi, P. Gajendragadkar, M. Takigawa, A. Frontera, G. Cheniti, N. Thompson, T. Kitamura, Konstantinos Vlachos, Michael Wolf, Felix Bourier, A. Lam, J. Duchâteau, G. Massoullié, T. Pambrun, A. Denis, N. Derval, R. Dubois, M. Hocini, Michael Haïssaguerre, P. Jaïs, F. Sacher   +26 more
semanticscholar   +1 more source

Dissatisfaction After Trifocal IOL Implantation and Its Improvement by Selective Wavefront-Guided LASIK.

Journal of refractive surgery, 2019
PURPOSE To evaluate a substantially improved wavefront acquisition technique (Peramis; SCHWIND eye-tech-solutions, Kleinostheim, Germany) for selective wavefront-guided aberration correction to improve satisfaction after implantation of trifocal ...
T. Seiler, Aharon Wegner, Tim Senfft, T. Seiler   +3 more
semanticscholar   +1 more source

Analysis of the wavefront aberrations based on neural networks processing of the interferograms with a conical reference beam

Applied physics B, 2022
S. Khonina, P. Khorin, P. Serafimovich, A. Dzyuba, A. Georgieva, N. Petrov   +5 more
semanticscholar   +1 more source

The wavefront revolution

Journal of Cataract & Refractive Surgery, 2021
Scott M, MacRae, Geunyoung, Yoon
openaire   +2 more sources