Results 261 to 270 of about 2,924,633 (320)

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

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

Single and Bi‐Layer Glass‐Based Phantoms: Robust Materials for a Calibration Standard for Fluorescence Imaging Systems

Advanced Photonics Research, EarlyView.
Fluorescence‐guided surgery is a common technique and characterizing imaging performance is important to ensure clinical reliability. A calibration standard comprising multiple glass phantoms fabricated to mimic the optical properties of fluorescent and non‐fluorescent tissue is presented.
Mingze Yang, Yunle Wei, Philipp Reineck, Adam J. Wells, Heike Ebendorff‐Heidepriem, Jiawen Li, Robert A. McLaughlin   +6 more
wiley   +1 more source

Scintillation Response of 0D Cs3Cu2I5 Thin Layers to Light‐ and Heavy‐Ion Irradiation

Advanced Photonics Research, EarlyView.
Driven by increasing interest in uncovering the remarkable photoluminescence quantum yield of Cs3Cu2I5, polycrystalline thin layers are synthesized to investigate its radioluminescence response to energetic ions. Its spectroscopic capability is assessed in a wide range of ion mass and internal excitation processes are explored.
Mátyás Hunyadi, Attila Csík, Cintia Hajdu, Csaba Janáky, István Rajta, Gergely F. Samu, Lóránt Csige   +6 more
wiley   +1 more source

Optimizing Single‐Cell Measurement Using Dynamic Atomic Force Microscopy

Advanced Photonics Research, EarlyView.
This study optimizes optical detection sensitivity in atomic force microscopy for high‐frequency single‐cell imaging in liquid environments. By analyzing laser positioning on microcantilevers, it enhances measurement accuracy and image resolution. Advanced image analysis techniques assess quality, offering guidelines for high‐resolution imaging of ...
Indrianita Lionadi, Gourav Bhattacharya, Liam McLarnon, George A. Burke, Amir Farokh Payam   +4 more
wiley   +1 more source

Imaging Photonic Resonances within an All‐Dielectric Metasurface via Photoelectron Emission Microscopy

Advanced Photonics Research, EarlyView.
Photonic resonances within a dielectric metasurface are investigated using photoelectron emission microscopy (PEEM) and finite‐difference time‐domain simulations. An electron inelastic mean free path of 35 ± 10 nm is extracted from comparisons between microscopy and simulations.
Andrew R. Kim, Chloe F. Doiron, Fernando J. Vega, Jaeyeon Yu, Alex M. Boehm, Joseph P. Klesko, Igal Brener, Raktim Sarma, Alexander Cerjan, Taisuke Ohta   +9 more
wiley   +1 more source

Frequency‐Dependent Demethylation of Cancer DNAs by High‐Power Terahertz Radiation

Advanced Photonics Research, EarlyView.
Effective demethylation of cancer DNA is successfully demonstrated by resonant irradiation with high‐power terahertz (THz) waves at the 10 mW level, combined with metamaterial‐based THz filters. The dependence of spectral filtering on demethylation indicates that the resonant frequency of 1.6 THz of cancer DNAs plays a crucial role in reducing the ...
Chaeyoon Kim, Seung Won Jin, Seong Cheol Lee, Donghak Oh, Soojeong Baek, Bumki Min, Hee‐Jin Yang, Joo‐Hiuk Son, Fabian Rotermund   +8 more
wiley   +1 more source

VARIATIONAL APPROACH IN WAVELET FRAMEWORK TO POLYNOMIAL APPROXIMATIONS OF NONLINEAR ACCELERATOR PROBLEMS

, 2000
Antonina N. Fedorova, Michael G. Zeitlin, Z. Parsa   +2 more
openalex   +1 more source

Restricted Nonlinear Approximation [PDF]

Constructive Approximation, 2000
We introduce a new form of nonlinear approximation called restricted approximation . It is a generalization of n -term wavelet approximation in which a weight function is used to control the terms in the wavelet expansion of the approximant. This form of approximation occurs in statistical estimation and in the characterization of interpolation spaces ...
Albert Cohen, Ronald A. DeVore, R. Hochmuth   +2 more
openaire   +2 more sources

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Fuzzy Approximation Based Asymptotic Tracking Control for a Class of Uncertain Switched Nonlinear Systems

IEEE transactions on fuzzy systems, 2020
The problem of asymptotic tracking control for a class of uncertain switched nonlinear systems under fuzzy approximation framework is solved in this paper.
Xudong Zhao, Xinyong Wang, Li Ma, Guangdeng Zong   +3 more
semanticscholar   +1 more source