Results 291 to 300 of about 342,349 (349)

Quantitative analysis of retinal vascular parameters changes in school-age children with refractive error using artificial intelligence. [PDF]

Front Med (Lausanne)
Liu L, Zhong L, Zeng L, Liu F, Yu X, Xie L, Tan S, Zhang S, Jiang YP.   +8 more
europepmc   +1 more source

Directional Whispering Gallery Mode in Microring Lasers Enabled by Tilted Azimuthal Gratings

Advanced Photonics Research, EarlyView.
The chiral light propagation in microring lasers with active cladding, enabled by tilted azimuthal gratings, is illustrated. The symmetry of the whispering gallery mode is disrupted due to scattering losses that are determined by the tilted angle, resulting in distinct clockwise and counterclockwise light propagation, and enabling controlled chirality ...
Jinghan Chen, Adrian Abazi, Frederik van Schoonhoven, Yuji Oki, Yohei Yamamoto, Carsten Schuck, Hiroaki Yoshioka   +6 more
wiley   +1 more source

Stimulated Raman Scattering with Optical Vortex Beams

Advanced Photonics Research, EarlyView.
This study presents exact analytical expressions for stimulated Raman scattering with Laguerre‐Gaussian beams, revealing signal dependence on topological and hyperbolic momentum. The results provide a theoretical foundation for coherent Raman imaging and detecting orbital angular momentum of light via structured light in nonlinear optics.
Minhaeng Cho
wiley   +1 more source

Differences in Ocular Axial Length Between Genders and Refractive Error Groups: A Cross-Sectional Study at the Yaoundé Central Hospital, Cameroon. [PDF]

Cureus
Konlack Mekontso JG, Dohvoma VA, Ebana Mvogo SR, Nguefang Tchoukeu GL, Mbessoh Kengne UI, Ndzernyuy Dubila F, Tamhouo Nwabo FL, Ebana Mvogo C.   +7 more
europepmc   +1 more source

Research Progress on Atmospheric Turbulence Perception and Correction Based on Adaptive Optics and Deep Learning

Advanced Photonics Research, EarlyView.
This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu, Yihang Di, Mengmeng Zhang, Zhenbo Ren, Jianglei Di, Jianlin Zhao   +5 more
wiley   +1 more source

Regional/ethnic differences in ocular axial elongation and refractive error progression in myopic and non-myopic children. [PDF]

Ophthalmic Physiol Opt
Naduvilath T, He X, Saunders K, Demir P, Leighton R, McCullough S, Tran H, Ha T, Macedo AF, Xun X, Sankaridurg P, Tahhan N.   +11 more
europepmc   +1 more source

Polarization Management on Anisotropic Thin‐Film Lithium Niobate Platform

Advanced Photonics Research, EarlyView.
This review focuses on x‐cut thin‐film lithium niobate (TFLN), exploring strategies to mitigate anisotropy and mode hybridization. It covers polarization beam splitters, rotators, splitter‐rotators, polarizers, and polarization‐insensitive components. Key applications include polarization‐division multiplexing, polarization‐insensitive modulation, and ...
Kaixuan Chen, Youxin Liu, Xinke Xing, Haohua Wang, Tian Gao, Weilong Ma, Fansu Zhao, Lingfeng Wu, Changjian Guo, Liu Liu   +9 more
wiley   +1 more source

Refractive error and ocular alignment in school-aged children from low-income areas of São Paulo, Brazil. [PDF]

BMC Ophthalmol
Fernandes AG, Vianna RG, Gabriel DC, Ferreira BG, Barbosa EP, Salomão SR, Campos M.   +6 more
europepmc   +1 more source

Thermo‐Optical Analysis of Surface‐ and Volume‐Additivated Polymer Powders for Near‐Infrared Laser Powder Bed Fusion

Advanced Photonics Research, EarlyView.
Precipitated PA11 powders for laser powder bed fusion are additivated with small amounts of carbon black nanoparticles on and in the particles. The position of the nanoparticles has a strong impact on dispersion, crystallization, and thermal oxidation.
Alexander Sommereyns, Jochen Schmidt, Cheechau Leong, Florentin Tischer, Michael Schmidt   +4 more
wiley   +1 more source

Refractive error and vision related quality of life. [PDF]

BMC Ophthalmol
Rajabpour M, Kangari H, Pesudovs K, Khorrami-Nejad M, Rahmani S, Mohaghegh S, Moradnejad S.   +6 more
europepmc   +1 more source