Level sequence and splitting identification of closely-spaced energy levels by angle-resolved analysis of the fluorescence light [PDF]
Physical Review A 93, 063413 (2016), 2016 The angular distribution and linear polarization of the fluorescence light following the resonant photoexcitation is investigated within the framework of the density matrix and second-order perturbation theory. Emphasis has been placed on "signatures" for determining the level sequence and splitting of intermediate (partially) overlapping resonances ...
Dong, C. Z. +4 more
arxiv +3 more sources
Combining single-molecule super-resolved localization microscopy with fluorescence polarization imaging to study cellular processes [PDF]
2021 J. Phys. Photonics 3 034010, 2020 Super-resolution microscopy has catalyzed valuable insights into the sub-cellular, mechanistic details of many different biological processes across a wide range of cell types. Fluorescence polarization spectroscopy tools have also enabled important insights into cellular processes through identifying orientational changes of biological molecules ...
arxiv +1 more source
Polarization effects on fluorescence emission of zebrafish neurons using light-sheet microscopy [PDF]
arXiv, 2022 Light-sheet fluorescence microscopy (LSFM) makes use of a thin plane of light to optically section and image transparent tissues or organisms {\it{in vivo}}, which has the advantages of fast imaging speed and low phototoxicity. In this paper, we have employed light-sheet microscopy to investigate the polarization effects on fluorescence emission of ...
arxiv
Polarization of fluorescence lines: tracing magnetic field from circumstellar medium to early universe [PDF]
arXiv, 2021 Fluorescence emission lines are broadly applied in observation for diffuse medium in the universe. They are normally observed around strong pumping source, tracing the gas in circumstellar medium, reflection nebula, and H\,{\sc ii} regions, etc.
arxiv
Solvatochromism of (-)-Epigallocatechin 3-O-Gallate (EGCG) Fluorescence: Dependence on Solvent Protonicity [PDF]
arXiv, 2021 Health benefits of EGCG are well established; however, the mechanisms of EGCG action are not completely understood. In our previous study we discovered solvatochromism of EGCG fluorescence and described the dependence of fluorescence maxima on solvent polarity. We also noted that fluorescence intensity (FI) depends on solvent.
arxiv
Fluorescence polarization as a precise tool for understanding nonsequential many-photon ionization [PDF]
Phys Rev. A 100, 011401(R) 2019, 2019 Nonsequential two-photon ionization of inner-shell $np$ subshell of neutral atoms by circularly polarized light is investigated. Detection of subsequent fluorescence as a signature of the process is proposed and the dependence of fluorescence degree of polarization on incident photon beam energy is studied.
arxiv +1 more source
Self-Assembly of Pheophorbide-a on Poly-L-Lysine [PDF]
arXiv, 2021 Binding of Pheophorbide-a of to poly-L-lysine (PLL) have been studied in neutral aqueous buffered solutions of low and near-physiological ionic strengths with low ethanol content (2.4-5.9 %) a wide range of molar polymer-to-dye ratios (P/D) using absorption and polarized fluorescence spectroscopy, fluorimetric titration, fluorescence melting.
arxiv
Fluorescence control through vacuum induced coherences [PDF]
J. Phys. B: At. Mol. Opt. Phys. 52, 075402 (2019), 2018 The resonance fluorescence of a four-level atom in J = 1/2 to J = 1/2 transition driven by two coherent fields is studied. We find that the incoherent fluorescence spectrum shows a direct indication of vacuum-induced coherence in the atomic system. We show that such coherence manifests itself via an enhancement or suppression of the spectral peaks in ...
arxiv +1 more source
Projective measurement of a single nuclear spin qubit by using two-mode cavity QED [PDF]
Phys.Rev.Lett.106:160501,2011, 2010 We report the implementation of projective measurement on a single 1/2 nuclear spin of the 171Yb atom by measuring the polarization of cavity-enhanced fluorescence. To obtain cavity-enhanced fluorescence having a nuclear-spin-dependent polarization, we construct a two-mode cavity QED system, in which two cyclic transitions are independently coupled to ...
arxiv +1 more source
Doubly and triply coupled nanowire antennas [PDF]
J. Phys. Chem. C 116, 23779-23784 (2012), 2012 Nanoantenna is one of the most important optical components for light harvesting. In this study, we show experimental evidence of interactions between coupled nanowires by comparing the fluorescence properties of quantum dots on both non-coupled (single) and coupled (double and triple) nanowire arrays.
arxiv +1 more source