Effects of atomic cooperation and dipole correlation on the N-photon emission spectrum of atoms

1992 ◽  
Author(s):  
Zhen-Fei Luo ◽  
Zhizhan Xu
Keyword(s):  
Emission Spectrum ◽  
Photon Emission ◽  
Dipole Correlation

Two-photon emission spectrum of a two-level atom in an ideal cavity

1994 ◽  
Vol 49 (5) ◽  
pp. 4009-4015 ◽  
Author(s):  
Lin-sheng He ◽  
Xun-li Feng
Keyword(s):  
Emission Spectrum ◽  
Photon Emission ◽  
Two Photon ◽  
Level Atom

A fluorescence enhancement assay of cell fusion

1977 ◽  
Vol 28 (1) ◽  
pp. 167-177
Author(s):  
P.M. Keller ◽  
S. Person ◽  
W. Snipes
Keyword(s):  
Absorption Spectrum ◽  
Energy Transfer ◽  
Emission Spectrum ◽  
Cell Fusion ◽  
Saturated Hydrocarbon ◽  
Photon Emission ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Hydrocarbon Chains ◽  
Fluorescent Molecules

Two probes were synthesized which consist of fluorescent molecules conjugated to saturated hydrocarbon chains, 18 carbons long, to ensure their localization into cellular membranes. There is an overlap between the emission spectrum of one probe (donor) and the absorption spectrum of the other probe (acceptor). By the use of appropriate wavelengths it is possible to specifically excite the donor probe and record the fluorescence of the acceptor probe. Two cell populations, each labelled with one of the probes, were infected with a virus that causes cell fusion, mixed in equal proportions, and the fluorescence of the acceptor probe measured as a function of time after infection. An increase in fluorescence was observed beginning at the time of onset of cell fusion indicating a mixing of the fluorescent membrane molecules. An investigation of the distance dependence indicated that the increase in fluorescence was mainly due to resonance energy transfer and not to photon emission and reabsorption. Resonance energy transfer requires that the 2 probes be close together and that there be an overlap of the emission spectrum of the donor probe and the absorption spectrum of the acceptor probe. The possible application of this assay to other types of membrane fusion is noted.

scholarly journals Single-photon emission from isolated monolayer islands of InGaN

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiaoxiao Sun ◽  
Ping Wang ◽  
Tao Wang ◽  
Ling Chen ◽  
Zhaoying Chen ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Emission Spectrum ◽  
Molecular Beam ◽  
Single Photon ◽  
Photon Emission ◽  
Optical Analysis ◽  
Single Photon Emission ◽  
Quantum Emitter ◽  
Characteristic Emission

Abstract We identify and characterize a novel type of quantum emitter formed from InGaN monolayer islands grown using molecular beam epitaxy and further isolated via the fabrication of an array of nanopillar structures. Detailed optical analysis of the characteristic emission spectrum from the monolayer islands is performed, and the main transmission is shown to act as a bright, stable, and fast single-photon emitter with a wavelength of ~400 nm.

Two-photon emission spectrum

1987 ◽  
Vol 36 (8) ◽  
pp. 3904-3908 ◽  
Author(s):  
H. R. Zaidi
Keyword(s):  
Emission Spectrum ◽  
Photon Emission ◽  
Two Photon
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