Results 41 to 50 of about 809 (132)

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, Bruno Miranda, Silvia Romano, Gianluigi Zito   +3 more
wiley   +1 more source

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
doaj   +1 more source

Quantum Plasmonic Dynamics Modeled via a Modified Langevin Noise Formalism: Numerical Studies of Single‐Photon Emission and Two‐Photon Interference

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
Based on the modified Langevin noise formalism and BA‐MA theory, optimized computational formulations are demonstrated for quantum plasmonic simulations without explicit BA–MA mode construction. Plasmonic Hong‐Ou‐Mandel interference, g2, atomic population, and single‐photon probability amplitudes are efficiently analyzed, revealing directional single ...
Jisang Seo, Hyunwoo Choi, Thomas E. Roth, Jie Zhu, Weng Cho Chew, Dong‐Yeop Na   +5 more
wiley   +1 more source

Fundamental absorption bandwidth to thickness limit for transparent homogeneous layers

Nanophotonics
Past 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., Deng Yang, Khatib Omar, Tarokh Vahid   +3 more
doaj   +1 more source

Temperature Dependent Complex Refractive Index (CRI) of Hexagonal Ice in the Range 150–270 K: Infrared and Far‐Infrared Transmission Measurements at the AILES Beamline

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract The complex refractive index (CRI) of ice is one of the main parameters driving the optical properties of ice clouds and frozen surfaces, hence their climate impact. While already characterized at short wavelengths, ice CRI has never been measured across the infrared range at temperatures relevant to Earth.
Cecilia Taverna, Marine Verseils, Jean‐Blaise Brubach, Kelly Rader, Quentin Libois, Pascale Roy, Laurent C.‐Labonnote   +6 more
wiley   +1 more source

Comprehensive DFT Analysis of FeSi and RhSi: Structural Stability, Electronic Contrast and Transport‐Optical Responses

Advanced Physics Research, Volume 5, Issue 8, August 2026.
This comprehensive density functional theory analysis investigates the structural, electronic, optical, mechanical, and thermoelectric properties of FeSi, c‐RhSi, and o‐RhSi. Results reveal distinct electronic and optical contrasts among the materials.
Md Farhan Hassan, Shaher Azad, Md Salim Hossain, Suptajoy Barua, Md Kamruzzaman   +4 more
wiley   +1 more source

Computation of distribution of relaxation times by Tikhonov regularization for Li ion batteries: usage of L-curve method

Scientific Reports, 2021
In this paper, the distribution of relaxation times (DRTs) functions are calculated numerically in Matlab for synthetic impedance data from single parallel $$RC$$ RC circuit and two parallel $$RC$$ RC circuits connected in series, experimental impedance ...
T. Paul, P. W. Chi, Phillip M. Wu, M. K. Wu   +3 more
doaj   +1 more source

First Principles Insights Into Emerging Perovskite Hydrides for Hydrogen Storage Applications: A Review

physica status solidi (RRL) – Rapid Research Letters, Volume 20, Issue 8, August 2026.
Perovskite hydrides are emerging as promising solid‐state hydrogen storage materials with tunable composition, structural versatility, and reversible hydrogen uptake. First‐principles DFT calculations offer important insights into their stability, electronic structure, thermodynamics, and storage performance.
Fikadu Takele Geldasa, Francis Birhanu Dejene   +1 more
wiley   +1 more source

Comparing the Effects of Chemical Optical Clearing Agents and Mechanical Compression on the Optical Attenuation of Porcine Skin

Journal of Biophotonics, Volume 19, Issue 7, July 2026.
Quantitative SD‐OCT analysis reveals that topically applied chemical optical clearing agents, specifically PEG‐400 combined with oleic acid and aqueous tartrazine, significantly reduce the skin optical attenuation coefficient. In contrast, mechanical compression proved ineffective, identifying chemical clearing as a superior strategy for optimizing ...
Camila Ramos Silva, Tania Mateus Yoshimura, Jailda Nonato dos Santos Oliveira, Marcus Paulo Raele, Marcos Antonio Hortellani, Martha Simões Ribeiro, Denise Maria Zezell, Marcello Magri Amaral   +7 more
wiley   +1 more source

Non‐Uniform Programmable Photonic Waveguide Meshes

Laser &Photonics Reviews, Volume 20, Issue 14, 22 July 2026.
Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley   +1 more source