Results 171 to 180 of about 8,929 (253)

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

Laser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan, Yanlei Liu, Kun Yu, Han Dai, Tianxu Jia, Zhiying Chen, Junsuk Rho, Yufang Liu   +7 more
wiley   +1 more source

Broadband synergy versus oscillatory redundancy in the visual cortex. [PDF]

Nat Commun
Roberts L, Äijälä J, Burger F, Uran C, Jensen MA, Miller KJ, Ince RAA, Vinck M, Hermes D, Canales-Johnson A.   +9 more
europepmc   +1 more source

High‐Efficiency Graphene‐Silicon Slot‐Waveguide Microring Modulator at 1.5 and 2 µm Wavelength Bands

Laser &Photonics Reviews, EarlyView.
E/O modulators typically face a trade‐off between bandwidth and modulation efficiency. An integrated E/O modulator is presented that simultaneously achieves wideband, large bandwidth, and high modulation efficiency operation by embedding a partially overlapped double‐layer graphene on a compact silicon slot‐waveguide microring resonator.
Chao Luan, Deming Kong, Yong Liu, Yunhong Ding, Hao Hu   +4 more
wiley   +1 more source

Reconfigurable SiC gratings in PDMS: a portable approach for atmospheric optical communication networks. [PDF]

Light Sci Appl
Ma W, Fu Y, Han D, Dong K, Zeng J, Wang Q, Lin P, Zhang Y, Gu Y, Liu Z, Liu X, Jiang H.   +11 more
europepmc   +1 more source

Grating‐Lens Empowered Metafiber for Large‐Angle Light Collection With 3D Nanoprinted Structures

Laser &Photonics Reviews, EarlyView.
A grating‐lens‐based Metafiber enables efficient light coupling into single‐mode fibers at large incidence angles. By combining diffraction and focusing on the fiber facet using a 3D nanoprinted holographic structure, light is selectively coupled only at specific angles while suppressing unwanted signals. This approach achieves high coupling efficiency
Jun Sun, Markus A. Schmidt
wiley   +1 more source

Improving Chirped Fiber Bragg Grating Resolution for Position-Sensitive Sensors in Shock- and Detonation-Driven Experiments. [PDF]

Sensors (Basel)
Bowley TY, Schultz KA, Hudston JA, Klepzig PC, Peterson CR, DeLoach JR, Lundberg TO, Gilbertson S.   +7 more
europepmc   +1 more source

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

Tuning Surface-Enhanced Raman Scattering (SERS) via Filling Fraction and Period in Gold-Coated Bullseye Gratings. [PDF]

Nanomaterials (Basel)
Li Z, Cheng Y, Fernandes C, Wang X, Ruda HE.   +4 more
europepmc   +1 more source

Reconfigurable Giant Nonreciprocity at Near‐Normal Incidence via Phase‐Change Magneto‐Optical Metagratings

Laser &Photonics Reviews, EarlyView.
A phase‐change magneto‐optical metagrating combines GST switching with InAs guided‐mode resonances to achieve strong nonreciprocal absorption contrast near normal incidence. A static magnetic bias creates direction‐dependent resonant splitting, while GST crystallization quenches and latches the response.
Ye Ming Qing, Yi Shen, Jun Wu, Shunsuke Murai, Zhaogang Dong, Koichi Okamoto   +5 more
wiley   +1 more source

Accurate Determination of the Temperature Sensitivity of UV-Induced Fiber Bragg Gratings. [PDF]

Sensors (Basel)
Cosme M, Pota M, Preizal J, Caldas P, Oliveira R, Nogueira R, Araújo FM, Cruz JL, Rego GM.   +8 more
europepmc   +1 more source