Results 181 to 190 of about 16,909 (260)

High-efficiency grating couplers for vertical coupling in thin-film silicon nitride technology. [PDF]

Sci Rep
di Croce F, Vitali V, Domínguez Bucio T, Pennoni A, Liu H, Cristiani I, Gardes F, Lacava C, Petropoulos P.   +8 more
europepmc   +1 more source

Effects of Composite Reclamation Models of Sea Buckthorn, A Pioneer Species in Semi‐Arid Regions, on Soil Quality and Microbial Communities

Land Degradation &Development, EarlyView.
ABSTRACT Open‐pit coal mining severely degrades soil and ecosystem functions, constraining regional sustainability. Vegetation‐based reclamation has therefore been widely adopted as an effective approach to promote soil recovery and ecosystem restoration.
Bo Wen, Yun Li, Haixin Yang, Pengjie Guo, Donggang Guo, Yu Lin, Xianyun Zheng, Quanxi Zhang   +7 more
wiley   +1 more source

Angle-Resolved Enhancement of Rh800 Dye Photoluminescence Using Plasmonic Metal Gratings. [PDF]

Materials (Basel)
Abudula A, Maitiaximu P.
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

Polydimethylsiloxane in Optics. [PDF]

Polymers (Basel)
Calixto S, Zitzumbo R, Alfaro-Gomez M.
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

Efficient and Tunable Narrowband Second‐Harmonic Generation by a Large‐Area Etchless Lithium Niobate Metasurface

Laser &Photonics Reviews, EarlyView.
An etchless lithium niobate (LN) metasurface with a slanted periodic TiO2 grating enables efficient and narrowband second‐harmonic generation (SHG) thanks to the light confinement in the LN film granted by quasi‐bound‐state‐in‐the‐continuum (q‐BIC) modes.
Yaping Hou, Yigong Luan, Yu Fan, Alfonso Nardi, Attilio Zilli, Bobo Du, Jinyou Shao, Marco Finazzi, Chunhui Wang, Lei Zhang, Michele Celebrano   +10 more
wiley   +1 more source

Tunable optical low-pass filtering based on chirped grating in arrays of graphene. [PDF]

PLoS One
Ao Y, Chen X, Zhao M, Ni H, Zhong D, Liu F, Chen X, Dong J, Liu Z.   +8 more
europepmc   +1 more source

Parallel Multi‐Target Detection for Quantum LiDAR

Laser &Photonics Reviews, EarlyView.
Parallel multi‐target detection is achieved in quantum LiDAR with a single‐pixel quantum readout. Direction and distance information are extracted together, allowing multiple objects to be distinguished under noisy low‐light conditions and pointing to a new strategy for scan‐free quantum remote sensing.
Junyeop Kim, Dongjin Lee, Woncheol Shin, Yeoulheon Seong, Heedeuk Shin   +4 more
wiley   +1 more source

Numerical Analysis and Design of Active Waveguide Bragg Gratings for High-Contrast Thermal Sensing and Tunable Linear Thermal Gradient Threshold Detection. [PDF]

Sensors (Basel)
Sanz-Felipe Á, Vallés JA.
europepmc   +1 more source