Results 51 to 60 of about 1,782,899 (173)
Development of ultrafast time-resolved dual-comb spectroscopy
APL Photonics, 2017 Ultrafast time-resolved dual-comb spectroscopy (TR-DCS) has been demonstrated, which enables direct observations of transient responses of complex optical spectra by combining dual-comb spectroscopy with the pump–probe
Akifumi Asahara, Kaoru Minoshima
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Ensuring Data Integrity in AI-Driven Materials Science: Why F-Sum Rules and Kramers-Kronig Relations Matter [PDF]
Nanoscale and Advanced MaterialsArtificial intelligence (AI) is revolutionizing materials science, enabling accelerated discovery and optimization of advanced materials. However, the reliability of AI-driven models critically depends on the integrity of the underlying data.
Seyed Hamed Aboutalebi
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Theory of Supercritical Coupling and Generalized Bound States in the Continuum
Laser &Photonics Reviews, EarlyView.We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri +3 more
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Kramers-Kronig relations and causality conditions for graphene in the framework of the Dirac model [PDF]
, 2018 We analyze the concept of causality for the conductivity of graphene described by the Dirac model. It is recalled that the condition of causality leads to the analyticity of conductivity in the upper half-plane of complex frequencies and to the standard ...
G. L. Klimchitskaya, V. Mostepanenko
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Fundamental absorption bandwidth to thickness limit for transparent homogeneous layers
NanophotonicsPast work has considered the analytic properties of the reflection coefficient for a metal-backed slab. The primary result established a fundamental relationship for the minimal layer thickness to bandwidth ratio achievable for an absorber. There has yet
Padilla Willie J. +3 more
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Corrosion Analysis of Rapidly Solidified and Subsequently Aged Al‐Ni and Al‐Fe‐Ni Alloys
Materials and Corrosion, EarlyView.Fe addition modifies intermetallic phase chemistry and microgalvanic interactions in Al‐Ni alloys, shifting corrosion from generalized dissolution to localized attack. ABSTRACT This study investigates the influence of Fe addition and heat treatment on the corrosion behavior of Al–5 wt.%Ni and Al–2 wt.%Fe–1.5 wt.%Ni alloys, with particular emphasis on ...
Jaderson Rodrigo da Silva Leal +4 more
wiley +1 more source
Polarization‐Dependence of Nonlinear Optical Effects in Silicon: The Case of Ultrafast Processing
Advanced Physics Research, Volume 5, Issue 10, October 2026.The dependence of the input polarization for the nonlinear optical propagation in silicon is investigated theoretically and experimentally. The perturbative regime is examined using pump‐probe shadowgraphy and nonlinear transmission, whereas the case of permanent laser‐induced modifications is addressed using a combination of Raman micro‐spectroscopy ...
Namig Alasgarzade +6 more
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Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response
Laser &Photonics Reviews, Volume 20, Issue 19, 7 October 2026.A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng +3 more
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Advanced Functional Materials, Volume 36, Issue 78, 28 September 2026.A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy +5 more
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Unraveling the Thermal Response From Individual Multipole Resonances in Magnetodielectric Spheres
Advanced Photonics Research, Volume 7, Issue 9, September 2026.A semi‐analytical framework resolves electromagnetic heating into individual multipolar contributions and an inter‐order coupling correction, linking internal modal fields to local dissipation, temperature evolution, and heat flux. Applied to dual‐symmetric magnetodielectric spheres, it reveals balanced polarization and magnetization losses and ...
Jhon James Hernández‐Sarria +3 more
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