Results 31 to 40 of about 292,233 (298)

Collective Spontaneous Emission Modulated by Strong Coupling in Hyperbolic Metamaterials

Photonics
We study the collective spontaneous emission of two quantum emitters (QEs) placed near a semiconductor hyperbolic metamaterial (HMM) composed of a multilayer quantum well (MQW) and doped n+-In0.53Ga0.47As.
Xiangting Wang, Mengcheng Guan, Tongbiao Wang, Tianbao Yu, Qinghua Liao   +4 more
doaj   +1 more source

Efficient Spatial Redistribution of Quantum Dot Spontaneous Emission from 2D Photonic Crystals

, 2007
We investigate the modification of the spontaneous emission dynamics and external quantum efficiency for self-assembled InGaAs quantum dots coupled to extended and localised photonic states in GaAs 2D-photonic crystals.
A. Kress, A. Laucht, J. J. Finley, Kress A., M. Bichler, M. Kaniber, M.-C. Amann, R. Meyer   +7 more
core   +1 more source

Spatial oscillations in the spontaneous emission rate of an atom inside a metallic wedge

, 2010
A method of images is applied to study the spontaneous emission of an atom inside a metallic wedge with an opening angle of $\pi/N$, where N is an arbitrary positive integer.
Fleet L R, H J Zhao, Hinds E A, M L Du, Milonni P W, Robinett R W   +5 more
core   +1 more source

Decay dynamics of quantum dots influenced by the local density of optical states of two-dimensional photonic crystal membranes [PDF]

, 2008
We have performed time-resolved spectroscopy on InAs quantum dot ensembles in photonic crystal membranes. The influence of the photonic crystal is investigated by varying the lattice constant systematically.
Forchel, A., Johansen, J., Julsgaard, B., Kamp, M., Lodahl, P., Stobbe, S., Stolberg-Rohr, T., Sünner, T.   +7 more
core   +3 more sources

Amplified Nonreciprocal Reflection in a Uniform Atomic Medium with the Help of Spontaneous Emissions

Photonics
It is important to elaborate on versatile strategies for achieving the perfect nonreciprocal reflection amplification, which is the key technology of high-quality nonreciprocal photonic devices. In this work, we ingeniously design a coherent four-level N-
Xinyu Lin, Xinfu Zheng, Yue Geng, Guanrong Li, Qiongyi Xu, Jinhui Wu, Dong Yan, Hong Yang   +7 more
doaj   +1 more source

Damped Population Oscillation in a Spontaneously Decaying Two-Level Atom Coupled to a Monochromatic Field [PDF]

, 2006
We investigate the time evolution of atomic population in a two-level atom driven by a monochromatic radiation field, taking spontaneous emission into account. The Rabi oscillation exhibits amplitude damping in time caused by spontaneous emission.
Hai-Woong Lee, L. Allen, M. O. Scully, M. Sargent III, R. Loudon, Sun Kyung Lee   +5 more
core   +2 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Spontaneous emission of an atom placed near a nanobelt of elliptical cross-section [PDF]

, 2007
Spontaneous emission of an atom (molecule) placed near a nanocylinder of elliptical cross-section of an arbitrary composition is studied. The analytical expressions have been obtained for the radiative and nonradiative channels of spontaneous decay and ...
B. Z. Katsenelenbaum, B. Z. Katsenelenbaum, D. V. Guzatov, D. Y. Chu, E. M. Purcell, J. A. Stratton, J. C. Johnson, K. Oshiro, L.-W. Li, M. A. Rippin, N. N. Kalitkin, P. L. E. Uslenghi, P. M. Morse, P. N. Prasad, R. R. Chance, R. Saito, S. A. Maksimenko, S. D. Brorson, V. V. Klimov, V. V. Klimov, V. V. Klimov, X. Y. Kong   +21 more
core   +2 more sources

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Cds Quantum Dots Composite Sol-gel Rod for Optical Applications

Medžiagotyra
Colloidal quantum dots (QDs) based on CdS were directly incorporated into a sol to fabricate solid rods. Various characterization techniques were employed to study the properties of the composite rod.
M. Naziruddin KHAN, Abdullah ALMOHAMMEDI
doaj   +1 more source