Results 51 to 60 of about 1,350 (185)
Laser &Photonics Reviews, EarlyView.Room‐temperature lower‐polariton‐like lasing is realized in an InGaN/GaN thin‐film ridge cavity with lateral distributed Bragg reflectors. Near‐field optical microscopy distinguishes the transverse side‐DBR‐confined mode from a longitudinal photon‐like mode, while simulations reproduce their spatial profiles.
Wai Yuen Fu +2 more
wiley +1 more source
Multifunctional Metasurfaces for Bridging Terahertz Waves in Free Space and Waveguides
Advanced Physics ResearchMetasurfaces integrated with transmission devices like waveguides can realize versatile control of guided waves and significantly enhance the integration level of terahertz systems.
Jinhui Lu +5 more
doaj +1 more source
Design of an 8‐Channel Transmit 32‐Channel Receive 11.7T Head Coil and Evaluation of SNR Gains
Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 2004-2018, October 2026.ABSTRACT Purpose To design and develop an 8‐channel transmit 32‐channel receive 11.7T head coil for the strongest human MRI scanner to date, demonstrate safety, and evaluate signal‐to‐noise ratio (SNR) gains compared to 7T, the most used ultra‐high‐field (UHF) platform.
Son Chu +8 more
wiley +1 more source
Relative Effects of Fabry‐Perot, Mie, and Guided‐Mode Resonance in Periodic Photonic Lattice Physics
Nanophotonics, Volume 15, Issue 16, 26 August 2026.The physical origins of resonance effects in one‐dimensional periodic photonic lattices are studied to assess the relative roles of Fabry–Perot, Mie, and guided‐mode resonance mechanisms. It is shown that lattice resonance is fundamentally governed by lateral leaky Bloch modes and their coupling to external radiation via guided‐mode resonance.
Yu Sung Choi +6 more
wiley +1 more source
Field Profile of Asymmetric Slab Waveguide Structure with LHM Layers [PDF]
Журнал нано- та електронної фізики, 2014 This paper presents asymmetric three-layer slab waveguide structure in which all layers are considered left-handed materials (LHMs) with negative electric permittivity and magnetic permeability.
S.A. Taya, Kh.Y. Elwasife
doaj
Breaking the Size‐Tolerance Trade‐off in Vertical Couplers via Adjoint‐Based Inverse Design
Nanophotonics, Volume 15, Issue 15, 13 August 2026.A physics‐guided inverse design framework combines physical insight with adjoint optimization by placing dense control points in the phase‐near‐matched region. This guided strategy yields a 20 μm III–V‐on‐silicon coupler with 98.11% efficiency, > 80% efficiency at ± $\mathit{\pm }$ 1.1 μm misalignment, and record high tolerance per unit length ...
Ruiqi Liu +7 more
wiley +1 more source
Optical Responses From Zero Optical‐Path‐Length Object
Nanophotonics, Volume 15, Issue 15, 13 August 2026.This work address a fundamental question—what is the ultimately minimal embodiment of optical objects that produce useful optical effects? In fact, such an object does not require nonzero physical and optical‐path‐length volume as opposed to the conventional perception.
Da Yong Lee +3 more
wiley +1 more source
Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.Abstract Background The CyberKnife™ system requires extensive beam data acquisition across multiple collimation systems. The CyberComm™ framework integrates a linac output tuning procedure with a hybrid Golden Beam Data (GBD) model to accelerate and standardize CyberKnife commissioning while maintaining dosimetric accuracy.
E. Pantelis +4 more
wiley +1 more source
AIP Advances, 2016 The development of small sized laser operating above room temperature is important in the realization of optical integrated circuits. Recently, micro-lasers consisting of photonic crystals (PhCs) and whispering gallery mode cavities have been ...
H. Oda +4 more
doaj +1 more source
Exploiting Optical Fibers and Slab Waveguides for a New Intensity-Based Refractometer
Proceedings, 2017 Refractive index sensors based on optical fibers have more advantages than those based on [...]
Nunzio Cennamo +2 more
doaj +1 more source