Results 91 to 100 of about 5,256,570 (379)

Photonic Molecules in Photonic Crystals

Japanese Journal of Applied Physics, 2006
We propose a photonic molecule consisting of multiple nanocavities in a photonic crystal and demonstrate its lasing and modal characteristics by finite-difference time-domain analysis and by experiments. In the analysis, we show that a point-shift defect and a point-missing defect have s- and p-orbital cavity modes, respectively, and that two adjacent ...
Toshihiko Baba, Kengo Nozaki, Satoru Ishii   +2 more
openaire   +2 more sources

Scattering of light in photonic crystals [PDF]

SPIE Proceedings, 2002
A new method is developed to calculate the scattering of light at the surface of a photonic crystal. The problem is solved in terms of virtual surface-current distributions and the calculation takes full advantage of the infinite-space plane-wave expansion method for obtaining the photonic band structure.
Jasper Knoester, Bernhard J. Hoenders, Marcel Doosje   +2 more
openaire   +4 more sources

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

Advanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia, Yuming Zhao, Meitong Nie, Benjamin Pittelkau, Aditya Garg, Junyeob Song, Wenqi Zhu, Henri Lezec, Amit Agrawal, Wei Zhou   +9 more
wiley   +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

Graphene-based one-dimensional photonic crystal

, 2011
A novel type of one-dimensional (1D) photonic crystal formed by the array of periodically located stacks of alternating graphene and dielectric stripes embedded into a background dielectric medium is proposed.
Berman O L, Bjorken J D, Falkovsky L A, Fermi E, Joannopoulos J D, Joannopoulos J D, Katsnelson M I, Keldysh L V, Kohn W, Landau L D, Oleg L Berman, Roman Ya Kezerashvili   +11 more
core   +1 more source

Highly Efficient 3D‐Printed PVDF‐Based Triboelectric Nanogenerators Featuring Polymorphic Perovskite Nanofillers

Advanced Functional Materials, EarlyView.
This study demonstrates the use of a low‐cost 3D printing technique to prepare a large‐area PVDF‐FAPbI3 composite dielectric film for flexible TENG application. The δ→α phase transformation of the FAPbI3 nanofillers has significantly improved the β‐phase content, morphology, and dielectric properties of the PVDF film.
Nurfatin Hafizah Zain Karimy, Hai Li, Hock Beng Lee, Devi Prashad Ojha, Manoj Mayaji Ovhal, Vasanthan Devaraj, Sooman Lim, Jae‐Wook Kang   +7 more
wiley   +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

Oxidation of AlInAs for current blocking in a photonic crystal laser [PDF]

, 2010
To make an electrically pumped photonic crystal membrane laser is a challenging task. One of the problems is how to avoid short circuiting between the p- and n-doped parts of the laser diode, when the membrane thickness is limited to 200-300nm.
Ambrosius, H, Bordas, F, de Vries, T, Roelkens, Günther, Smalbrugge, B, Smit, MK, Thijs, P, van der Tol, JJGM, Zhang, R   +8 more
core   +4 more sources

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

MODELING OF MULTILAYER ULTRATHIN-FILM PHOTONIC CRYSTALS FOR SELECTIVE FILTERS

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2019
The aim of the work was to study the optical properties of the one-dimensional photonic crystals from ultrathin alternating layers of titanium and silicon oxides with different order of alternating layers to form defective half-wave layers in the bulk of
L. S. Khoroshko, A. V. Baglov, A. A. Hnitsko   +2 more
doaj   +1 more source