Results 111 to 120 of about 2,024,523 (345)

Adaptive Shack-Hartmann wavefront sensor accommodating large wavefront variations.

Optics Express, 2018
Shack-Hartmann wavefront sensors (SHWFSs) usually have fixed subaperture areas on the detector, in order to fix the minimum and maximum amounts of wavefront departure, or the dynamic range of measurement.
M. Aftab, Heejoo Choi, Rongguang Liang, Dae Wook Kim   +3 more
semanticscholar   +1 more source

High‐Speed Design of Multiplexed Meta‐Optics Enabled by Physics‐Driven Self‐Supervised Network

Advanced Science, EarlyView.
A physics‐driven self‐supervised network (PDSS‐Net) is proposed for high‐speed, iteration‐free design of multiplexed meta‐optics. By learning a direct mapping from holographic targets to all meta‐atom structures, PDSS‐Net achieves a 1000× speedup over traditional optimization methods in designing 2K RGB meta‐holograms.
Yuqing He, Sheng Ye, Yue Han, Mingna Xun, Qiang Li, Ruiqi Wang, Qihuang Gong, Yan Li   +7 more
wiley   +1 more source

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, Manuel Rodríguez, José Manuel Rodríguez-Ramos   +2 more
doaj   +1 more source

Reconstructing Focal Topological Curves through Vortex Spots from Multifocal Metasurfaces

Advanced Science, EarlyView.
Multichannel multifocal silicon metasurfaces are built to reconstruct focal topological curves using an array of vortex spots, and upconverted fluorescence is used to directly visualize the morphology of the near‐infrared focal fields. Abstract Structured light plays an important role in modern photonics.
Hongguang Dong, Raheel Ahmed Janjua, Zhipeng Hu, Yi Jin, Sailing He   +4 more
wiley   +1 more source

Surface Adhesion Engineering for Armored Metasurfaces and Beyond

Advanced Science, EarlyView.
Targeting primary causes of dysfunctionality in optical systems, an “armored” metasurface is developed based on Persson's model and Hertzian theory, enabling anti‐dust, anti‐scratch, anti‐impact, and anti‐water, heat resistance capabilities, alongside excellent optical antireflection performance.
Lianwei Chen, Chengjun Zhang, Ahai Zhou, Qingsong Wang, Yao Fang, Jiangning Zhou, Xiong Li, Yinghui Guo, Yizhe Zhao, Mingbo Pu, Xiangang Luo   +10 more
wiley   +1 more source

Scanning Wavefront Sensor for Measurement of Highly Divergent Wavefronts

IFAC-PapersOnLine, 2019
Abstract This paper deals with the characterization of freeform optics by means of a wavefront sensor. Freeform optics show an increasing demand since they have the potential to improve optical system performance while reducing size, weight and complexity.
Georg Schitter, Martin E. Fuerst
openaire   +2 more sources

Varifocal Meta‐Lens for Multifunctional Focusing and Imaging

Advanced Science, EarlyView.
A varifocal meta‐lens enables dynamic switching between conventional focusing and non‐diffracting autofocusing beams, relying on a phase design with dual interpretations in both real space and the spatial frequency domain. By integrating a Moiré‐based tuning mechanism, the system achieves continuous focal length control in both modes.
Rong Lin, Jin Yao, Chen Chen, Jiajun Wu, Junxiao Zhou, Zhihui Wang, Din Ping Tsai   +6 more
wiley   +1 more source

RISTRETTO: a comparative performance analysis of the unmodulated pyramid wavefront sensor and the Zernike wavefront sensor

Adaptive Optics Systems IX
15 pages, 11 figures, SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama ...
Shinde, Muskan, Blind, Nicolas, Lovis, Christophe   +2 more
openaire   +2 more sources

Physical Interpretation of Diffractive Optical Networks for High‐Dimensional Vortex Mode Sorting

Advanced Science, EarlyView.
The first layer‐resolved physical interpretation of diffractive optical networks trained for high‐dimensional vortex mode sorting is presented, revealing transformation division phenomena linked to saturated performance as layer numbers increase. This analysis reconciles physical theorems with network operations, enabling physics‐driven design of ...
Ruitao Wu, Juncheng Fang, Rui Pan, Rongyi Lin, Kaiyuan Li, Ting Lei, Luping Du, Xiaocong Yuan   +7 more
wiley   +1 more source

Study of Point Scanning Detection Mechanisms for Vibration Signals with Wavefront Sensors

Photonics
Seismic 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, Hongsheng Luo, Yiyou Fan, Guihan Wu, Haoming Chen, Yun Pan, Wei Jiang, Jinshan Su   +7 more
doaj   +1 more source