Results 21 to 30 of about 904,763 (300)
Applied Sciences, 2019 A high-efficiency coupling method using the gradient-index (GRIN) fiber probe and hollow-core photonic crystal fiber (HC-PCF) is proposed to improve the response time and the sensitivity of gas sensors. A coupling efficiency model of the GRIN fiber probe
Chi Wang +5 more
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Diffraction efficiency of strong volume holograms [PDF]
, 1990 We investigate the diffraction efficiency of strong volume holograms in which the coupling parameter is several times that needed for maximum diffraction efficiency.
Brady, David +3 more
core +1 more source
Geophysical Research Letters, 2017 The nonlinear response of the cross polar cap potential (CPCP) to solar wind driving electric field is a well‐known phenomenon. The reasons behind this saturation, however, are still under debate.
M. Myllys, E. K. J. Kipua, B. Lavraud
doaj +1 more source
Efficient Markovian couplings: examples and counterexamples
The Annals of Applied Probability, 2000 It is well-known that coupling techniques can be applied to obtain various estimates in probability and analysis, both in theoretical research and in applications. The authors study the notion of an efficient coupling of Markov processes. A diffusion coupling is called ``efficient'' if it can be used to obtain a sharp estimate for the spectral gap of ...
Burdzy, Krzysztof, Kendall, Wilfrid S.
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Coupling Plasmonic System for Efficient Wavefront Control
ACS Applied Materials & Interfaces, 2021 Efficient and flexible manipulation of electromagnetic waves using metasurfaces has attracted continuous attention in recent years. However, previous studies mainly apply sole resonance effect to accomplish the task. Here, we show that introducing a meta-coupling effect would reveal further physical insights in the electromagnetic wave control.
Li Niu +10 more
openaire +3 more sources
Coupling Efficiency of a Partially Coherent Radially Polarized Vortex Beam into a Single-Mode Fiber
Applied Sciences, 2018 We study the problem of coupling partially coherent radially polarized (PCRP) vortex beams into a single-mode optical fiber. Using the well-known concept of the cross-spectral density (CSD) matrix, we derive a general expression for the coupling ...
Xinlei Zhu +4 more
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Results in Optics, 2022 When two parallel waveguides are close to each other, the power of the two adjacent waveguides will be periodically converted to form a directional coupled waveguide system ().
YuCheng Li +3 more
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Composite Dipolar Recoupling: Anisotropy Compensated Coherence Transfer in Solid-State NMR [PDF]
, 2006 The efficiency of dipole-dipole coupling driven coherence transfer experiments in solid-state NMR spectroscopy of powder samples is limited by dispersion of the orientation of the internuclear vectors relative to the external magnetic field.
Cindie Kehlet +5 more
core +1 more source
Applied Sciences, 2019 In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations.
Yongkai Liu +6 more
doaj +1 more source
Effects of system-bath entanglement on the performance of light-harvesting systems: A quantum heat engine perspective [PDF]
, 2015 We explore energy transfer in a generic three-level system, which is coupled to three non-equilibrium baths. Built on the concept of quantum heat engine, our three-level model describes non-equilibrium quantum processes including light-harvesting energy ...
Cao, Jianshu +3 more
core +2 more sources