Results 141 to 150 of about 44,477 (288)

Telescope interferometers: an alternative to classical wavefront sensors [PDF]

, 2008
François Hénault
openalex   +1 more source

Full‐color holographic image capture: Cholesteric liquid crystal circular polarizer combined with geometric phase lens reduces noise in self‐interference incoherent digital holography

Journal of the Society for Information Display, EarlyView.
By using cholesteric liquid crystals as circular polarization filters in quarter‐waveplate condition GPL (QW‐GPL) based SIDH, a stable circular polarization state is ensured, which reduces color distortion and polarization noise, thereby significantly enhancing the reconstructed image quality in full‐color QW‐GPL‐based SIDH.
Jin‐Hyeok Seo, Jae‐Won Lee, Jung‐Yeop Shin, Min‐Seok Kim, Young‐Min Cho, Hyeon‐Su Jeong, Erkhembaatar Dashdavaa, Kihong Choi, Keehoon Hong, Hak‐Rin Kim   +9 more
wiley   +1 more source

Deep learning enabled robust wavefront sensing for active beam smoothing with a continuous phase modulator

High Power Laser Science and Engineering
In laser systems requiring a flat-top distribution of beam intensity, beam smoothing is a critical technology for enhancing laser energy deposition onto the focal spot.
Yamin Zheng, Yifan Zhang, Liquan Guo, Pei Li, Zichao Wang, Yongchen Zhuang, Shibing Lin, Qiao Xue, Deen Wang, Lei Huang   +9 more
doaj   +1 more source

Coherence Awareness in Diffractive Neural Networks

Laser &Photonics Reviews, EarlyView.
It is demonstrated that spatial coherence significantly impacts all‐optical diffractive neural networks, unlike imaging systems. A general framework is proposed for training diffractive networks for any specified degree of spatial and temporal coherence. Coherence‐blind networks are further introduced, which are resilient to illumination changes. These
Matan Kleiner, Lior Michalei, Tomer Michalei   +2 more
wiley   +1 more source

Are physiological oscillations physiological?

The Journal of Physiology, EarlyView., 2023
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

PYRAMIR: Exploring the On-Sky Performance of the World’s First Near-Infrared Pyramid Wavefront Sensor [PDF]

, 2009
D. Peter, M. Feldt, Thomas Henning, S. Hippler, J. Aceituno, Luzma Montoya, Joana Costa, Bernhard Dorner   +7 more
openalex   +1 more source

Deconvolution Techniques in Optical Coherence Tomography: Advancements, Challenges, and Future Prospects

Laser &Photonics Reviews, EarlyView.
This review explores deconvolution techniques in optical coherence tomography (OCT), addressing resolution degradation from point‐spread functions (PSF). It reviews foundational principles (e.g., Richardson‐Lucy deconvolution) to advanced AI‐driven methods, emphasizing clinical translation and interdisciplinary collaboration. Real‐world implementations
Syeda Aimen Abbasi, Di Mei, Yuanyuan Wei, Chao Xu, Syed Muhammad Tariq Abbasi, Sadia Shakil, Wu Yuan   +6 more
wiley   +1 more source

Experimental Research on the Correction of Vortex Light Wavefront Distortion

Photonics
Wavefront distortion occurs when vortex beams are transmitted in the atmosphere. The turbulence effect greatly affects the transmission of information, so it is necessary to use adaptive optical correction technology to correct the wavefront distortion ...
Yahang Ge, Xizheng Ke
doaj   +1 more source

Adaptive optics wavefront sensors based on photon-counting detector arrays [PDF]

, 2010
Brian F. Aull, Daniel R. Schuette, R. Reich, Robert L. Johnson   +3 more
openalex   +1 more source

Optical Metasurfaces for the Next‐Generation Biosensing and Bioimaging

Laser &Photonics Reviews, EarlyView.
Recent advances in this understanding of light‐matter interactions, combined with innovations in the design and fabrication of large‐scale nanostructured metasurfaces, have enabled transformative approaches to biosensing and bioimaging. This review explores innovations in refractometric sensing, surface‐enhanced spectroscopy, and super‐resolution ...
Anthony J. El‐Helou, Yiting Liu, Chaohao Chen, Fan Wang, Hatice Altug, Peter J. Reece, Ying Zhu   +6 more
wiley   +1 more source