Results 21 to 30 of about 103,028 (311)

Use of a highly sensitive two-dimensional luminescence imaging system to monitor endogenous bioluminescence in plant leaves. [PDF]

, 2004
Background All living organisms emit spontaneous low-level bioluminescence, which can be increased in response to stress. Methods for imaging this ultra-weak luminescence have previously been limited by the sensitivity of the detection systems used ...
Tulene C McCabe, McCabe, Tulene C, Flor-Henry Michel, McCabe Tulene C, Guy L de Bruxelles, de Bruxelles Guy L, Flor-Henry, Michel, Michael R Roberts, Roberts, Michael R, Michel Flor-Henry, Roberts Michael R, De Bruxelles, Guy L.   +11 more
core   +1 more source

Multi-Dimensional Widefield Infrared-encoded Spontaneous Emission Microscopy: Distinguishing Chromophores by Ultrashort Infrared Pulses

, 2023
Photoluminescence (PL) imaging has broad applications in visualizing biological activities, detecting chemical species, and characterizing materials. However, it is often limited by the total number of independently resolvable chromophores within the ...
Jackson, Wagner, Jianyu, Ren, Carlynda, Lee, Shizhen, Wang, Chang, Yan, Chenglai, Wang, Yuhao, Wan, Wei, Xiong   +7 more
core   +1 more source

Single photon production by rephased amplified spontaneous emission

New Journal of Physics, 2014
The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population ...
R N Stevenson, M R Hush, A R R Carvalho, S E Beavan, M J Sellars, J J Hope   +5 more
doaj   +1 more source

Light Emission Properties of Thermally Evaporated CH₃NH₃PbBr₃ Perovskite from Nano- to Macro-Scale: Role of Free and Localized Excitons

Nanomaterials, 2022
Over the past decade, interest about metal halide perovskites has rapidly increased, as they can find wide application in optoelectronic devices. Nevertheless, although thermal evaporation is crucial for the development and engineering of such devices ...
Claudia Triolo, Maria Luisa De Giorgi, Antonella Lorusso, Arianna Cretì, Saveria Santangelo, Mauro Lomascolo, Marco Anni, Marco Mazzeo, Salvatore Patané   +8 more
doaj   +1 more source

Planar Photonic Crystal Nanocavities with Active Quantum Nanostructures [PDF]

, 2004
Extreme photon localization is applicable to constructing building blocks in photonic systems and quantum information systems. A finding fact that photon localization in small space modifies the radiation process was reported in 1944 by Purcell, and ...
Yoshie, Tomoyuki
core   +1 more source

Phase Control of Spontaneous Emission [PDF]

Physical Review Letters, 1998
We use the phase difference of two lasers with equal frequencies for the control of spontaneous emission in a four-level system. Effects such as extreme spectral narrowing and selective and total cancellation of fluorescence decay are shown as the relative phase is varied.
Paspalakis, E, Knight, PL
openaire   +3 more sources

Evidence for unexpected robustness of multipartite entanglement against sudden death from spontaneous emission

Physical Review Research, 2023
Entanglement is known to decay even in isolated systems, an effect attributed to spontaneous emission. This fragility of entanglement can be exacerbated by entanglement sudden death (ESD), where entanglement drops to zero abruptly within a finite time ...
Songbo Xie, Daniel Younis, Joseph H. Eberly   +2 more
doaj   +1 more source

3D modelling of enhanced surface emission using surface roughening [PDF]

, 2006
A 3D FDTD modelling is used to study the effect of surface roughening on the vertical emission of a point source emitting at lambda0=0.94 mum embedded in GaAs with a mirror behind the dipole.
I.J. Buss, Buss, IJ, Geoff Nash, M.K. Haigh, D. Ho, Nash, G R, Haigh, Mary, Ian Craddock, J.G. Rarity, G. Nash, Cryan, MJ, John Rarity, Nash, GR, Rarity, JG, Martin Cryan, M.J. Cryan, Craddock, IJ, Ho, Y-LD, Mary Haigh, C.J. Railton, Haigh, MK, I.J. Craddock, Ian Buss, Chris Railton, Railton, CJ   +24 more
core   +1 more source

Spontaneous Emission Enhancement by a Rectangular-Aperture Optical Nanoantenna: An Intuitive Semi-Analytical Model of Surface Plasmon Polaritons

Photonics, 2021
The spontaneous-emission enhancement effect of a single metallic rectangular-aperture optical nanoantenna on a SiO2 substrate was investigated theoretically.
Xinyue Zhang, Xuelin Zhai, Can Tao, Ning Wang, Ying Zhong, Haitao Liu   +5 more
doaj   +1 more source

Geometric Control of Collective Spontaneous Emission [PDF]

Physical Review Letters, 2020
Dipole spin-wave states of atomic ensembles with wave vector ${\bf k}(ω)$ mismatched from the dispersion relation of light are difficult to access by far-field excitation but may support rich phenomena beyond the traditional phase-matched scenario in quantum optics. We propose and demonstrate an optical technique to efficiently access these states.
He, Yizun, Ji, Lingjing, Wang, Yuzhuo, Qiu, Liyang, Zhao, Jian, Ma, Yudi, Huang, Xing, Wu, Saijun, Chang, Darrick E.   +8 more
openaire   +3 more sources