Results 81 to 90 of about 186,221 (352)

Terahertz‐Driven Ultrafast Dynamics of Rare‐Earth Nickelates by Controlling Only the Charge Degree of Freedom

Advanced Functional Materials, EarlyView.
The THz drive of the Mott insulating state of a rare‐earth nickelate induces instantaneous insulator‐metal transition via quantum tunneling of valence electrons across the bandgap. This transition is pure electronic and highly non‐thermal, which may find its applications in ultrafast opto‐electronics with enhanced performance and minimal device size ...
Gulloo Lal Prajapati, Sergey Kovalev, Igor Ilyakov, Atiqa Arshad, Gaurav Dubey, Ketan S. Navale, Dhanvir Singh Rana, Jan‐Christoph Deinert   +7 more
wiley   +1 more source

Self-trapping and stable localized modes in nonlinear photonic crystals [PDF]

, 2015
We predict the existence of stable nonlinear localized modes near the band edge of a two-dimensional reduced-symmetry photonic crystal with a Kerr nonlinearity.
Kivshar, Yuri, Mingaleev, Sergei
core   +1 more source

Topology optimization of a 120° bending high temperature superconducting photonic crystal waveguide

Results in Physics
The two-dimensional high-temperature superconducting photonic crystal structure has been widely studied as a novel type of photonic crystal structure.
Fei Wang, Gang Liu, Yongpan Gao, Shuzhen Lu, Baonan Jia, Xiaoning Guan, Lihong Han, Pengfei Lu   +7 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Fractal Photonic Crystal Waveguides

, 2004
We propose a new class of one-dimensional (1D) photonic waveguides: the fractal photonic crystal waveguides (FPCWs). These structures are photonic crystal waveguides (PCWs) etched with fratal distribution of grooves such as Cantor bars.
Bertolotti, Bertolotti, Carlos J. Zapata-Rodríguez, Chiadini, Enrique Silvestre, Jaggard, Joannopoulos, Juan A. Monsoriu, Krauss, Krauss, Lavrinenko, Lehman, Mandelbrot, Monsoriu, Monsoriu, Monsoriu, Monsoriu, Saavedra, Silvestre, Silvestre, Trabocchi, Walter D. Furlan, Zhukovsky   +22 more
core   +1 more source

Photonic crystal chips for optical interconnects and quantum information processing [PDF]

, 2008
We have recently demonstrated a number of functional photonic crystals devices and circuits, including an ultrafast, room temperature, low threshold, nanocavity laser with the direct modulation speed approaching 1 THz, an all-optical switch controlled ...
Altug, Hatice, Ellis, Bryan, Englund, Dirk, Faraon, Andrei, Fushman, Ilya, Vučković, J.   +5 more
core   +1 more source

Hybrid External Cavity Laser with an Amorphous Silicon-Based Photonic Crystal Cavity Mirror

Applied Sciences, 2019
The authors present results on the performance of a hybrid external cavity photonic crystal laser-comprising semiconductor optical amplifier, and a 2D photonic crystal cavity fabricated in low-temperature amorphous silicon.
Simone Iadanza, Chinna Devarapu, Alexandros Liles, Robert Sheehan, Liam O’Faoláin   +4 more
doaj   +1 more source

Air-Mode Photonic Crystal Micro-Ring Resonator With Enhanced Quality Factor for Refractive Index Sensing

IEEE Photonics Journal, 2020
Intense light-matter interaction is critical for enabling high-sensitivity refractive index sensors, high-efficiency light sources, and high-performance nonlinear devices.
Yameng Xu, Shubo Hu, Mei Kong
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Finite Element simulation of radiation losses in photonic crystal fibers

, 2007
In our work we focus on the accurate computation of light propagation in finite size photonic crystal structures with the finite element method (FEM).
Burger, Sven, Klose, Roland, Pomplun, Jan, Schmidt, Frank, Zschiedrich, Lin   +4 more
core   +1 more source