Results 31 to 40 of about 859 (177)
Scientific Reports, 2018 A novel optical holographic technique is presented to simultaneously measure both the real and imaginary components of the complex refractive index (CRI) of a protein solution over a wide visible wavelength range.
KyeoReh Lee +4 more
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Kramers-Kronig relations for nonlinear optics
Electronics Letters, 1990 The exact relationships between the real and imaginary parts of the susceptibility of nonlinear optical materials are reported. The implications of this result in the context of semiconductor lasers and to the study of nonlinear semiconductor optical waveguides are indicated.
K.A. Shore, D.A.S. Chan
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Advanced Science, EarlyView.This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei +8 more
wiley +1 more source
Advanced Science, EarlyView.A nuclear‐pore‐inspired nested dual‐loop architecture redistributes electromagnetic energy through coupled transport, confinement, and dissipation pathways. Integrated with Co/Fe3O4 dual‐magnetic composites and topology optimization, the 11‐mm‐thick absorber delivers continuous 2–40 GHz attenuation, raises finite‐band structural utilization to 82%, and
Shaokang Liu +6 more
wiley +1 more source
Quantum dynamics of the damped harmonic oscillator
New Journal of Physics, 2012 The quantum theory of the damped harmonic oscillator has been a subject of continual investigation since the 1930s. The obstacle to quantization created by the dissipation of energy is usually dealt with by including a discrete set of additional harmonic
T G Philbin
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Advanced Physics Research, EarlyView.This study employs density functional theory (DFT) to investigate the structural, mechanical, electronic, optical, and thermodynamic properties of RbGaO2 and CsGaO2. The calculated band structures and band‐edge positions indicate semiconducting behavior and favorable alignment for photocatalytic dye degradation and hydrogen evolution, highlighting ...
Md. Zuel Rana +9 more
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Space-resolved chemical information from infrared extinction spectra
Scientific Reports, 2023 A new method is presented for the extraction of the complex index of refraction from the extinction efficiency, $$Q_{ext} {({\tilde{\nu }})}$$ Q ext ( ν ~ ) , of homogeneous and layered dielectric spheres that simultaneously removes scattering effects ...
Yushmantha Ishan Kalpa de Silva Thuiya Hennadige +2 more
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Pump–probe model for the Kramers–Kronig relations in a laser [PDF]
Journal of Optics, 2010 In this paper, we study theoretically a pump-probe model for the Kramers-Kronig (KK) relations during laser operation. A laser gain medium at steady state becomes saturated and the lasing field experiences a flat gain equal to the cavity loss. A solution of the laser equations reveals that the lasing frequency experiences a dispersion that is linear ...
Yum, Honam, Shahriar, Selim M.
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Advanced Physics Research, EarlyView.The top panel shows the electronic band structure, which illustrates how the electronic energy varies with momentum along different high‐symmetry directions within the first Brillouin zone. Band structure determines the electronic character of a crystalline solid.
Tanvir Khan, F. Parvin, S. H. Naqib
wiley +1 more source
Is there a conflict between causality and diamagnetism?
New Journal of PhysicsThere is a long-standing apparent conflict between the existence of diamagnetism and causality as expressed through the Kramers–Kronig relations. In essence, using causality arguments, along with a small number of seemingly well-justified assumptions ...
Niclas Westerberg, Stephen M Barnett
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