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Frequency-filtered photon correlations have been proven to be extremely useful in grasping how the detection process alters photon statistics. Harnessing the spectral correlations also permits refinement of the emission and unraveling of…

Sequential registering of fluorescence signals in conventional Excitation-Emission Matrices (EEMs), followed by modeling based on multilinear properties of the data, requires stable fluorophore concentrations throughout the acquisition of…

Medical Physics · Physics 2025-02-28 Gabriel Siano , Sofia Mora , Agustina Schenone , Leonardo Giovanini

We have explored the light induced dynamics in superfluid helium nanodroplets with wide-angle scattering in a pump-probe measurement scheme. The droplets are doped with xenon atoms to facilitate the ignition of a nanoplasma through…

The effect of intense X-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ionization of the cluster is suppressed, which is in striking…

Atomic and Molecular Clusters · Physics 2009-11-07 Ulf Saalmann , Jan M Rost

We propose a method of spatial resolution enhancement in metrology (thermometry, magnetometry, pH estimation, and similar methods) with blinking fluorescent nanosensors by combining sensing with super-resolution optical fluctuation imaging…

Optics · Physics 2026-05-11 Alexander Mikhalychev , Alex Ulyanenkov

To date, high-resolution electron microscopy has largely relied on using the phase of the exit wave function at the exit surface to form a high-resolution electron microscopic image. We have for the first time used chromatic aberration…

Materials Science · Physics 2014-09-02 Jianguo Wen , Dean J. Miller , Nestor J. Zaluzec , Russell E. Cook , Ho Nyung Lee , Xifan Wu

Gas-phase oxygen-rich iron oxide clusters Fe(O2)n+ (n=1-6), are produced in a molecular beam apparatus. Their stability and structure are investigated by measuring the fragmentation cross sections from collision-induced-dissociation…

Atomic and Molecular Clusters · Physics 2013-06-26 Michalis Velegrakis , Claudia Mihesan , Maria Jadraque

We investigate ultrafast vibronic dynamics triggered by intense femtosecond infrared pulses in small molecules. Our study is based on numerical simulations performed with 2D model molecules, and analyzed in the perspective of the renown…

Fluorescent imaging in the second near infrared window (NIR II, 1-1.4 {\mu}m) holds much promise due to minimal autofluorescence and tissue scattering. Here, using well functionalized biocompatible single-walled carbon nanotubes (SWNTs) as…

Biological Physics · Physics 2011-05-19 Kevin Welsher , Sarah P. Sherlock , Hongjie Dai

Atomic Force Microscope images of a crack intersecting the free surface of a glass specimen are taken at different stages of subcritical propagation. From the analysis of image pairs, it is shown that a novel Integrated Digital Image…

Classical Physics · Physics 2015-05-18 Kun Han , Matteo Ciccotti , Stéphane Roux

We have shown that it is possible to model accurately optical phenomena in intense laser fields by taking into account the intensity distribution over the laser beam. We developed a theoretical model that divided an intense laser beam into…

Atomic Physics · Physics 2016-03-09 Marcis Auzinsh , Andris Berzins , Ruvin Ferber , Florian Gahbauer , Uldis Kalnins

By analyzing ``exact'' theoretical results from solving the time-dependent Schr\"odinger equation of atoms in few-cycle laser pulses, we established the general conclusion that differential elastic scattering and photo-recombination cross…

Atomic Physics · Physics 2008-04-04 Toru Morishita , Anh-Thu Le , Zhangjin Chen , C. D. Lin

Spectral properties of fluorescent radiation from a two-level quantum system with broken inversion spatial symmetry, which can be described by a model of an one-electron two-level atom whose electric dipole moment operator has permanent…

Quantum Physics · Physics 2024-12-17 Nikolai N. Bogolyubov, , Andrey V. Soldatov

A new approach to all-optical detection and control of the coupling between electric and magnetic order on ultrafast timescales is achieved using time-resolved second harmonic generation (SHG) to study a ferroelectric (FE)/ferromagnet (FM)…

Materials Science · Physics 2015-01-12 Y. M. Sheu , S. A. Trugman , L. Yan , Q. X. Jia , A. J. Taylor , R. P. Prasankumar

How coherent quasiparticles emerge by doping quantum antiferromagnets is a key question in correlated electron systems, whose resolution is needed to elucidate the phase diagram of copper oxides. Recent resonant inelastic X-ray scattering…

Strongly Correlated Electrons · Physics 2015-02-27 C. J. Jia , E. A. Nowadnick , K. Wohlfeld , Y. F. Kung , C. -C. Chen , S. Johnston , T. Tohyama , B. Moritz , T. P. Devereaux

Aberrations and multiple scattering in biological tissues critically distort light beams into highly complex speckle patterns. In this regard, digital optical phase conjugation (DOPC) is a promising technique enabling in-depth focusing.…

The European X-ray Free Electron Laser (XFEL) will deliver 30,000 fully coherent, high brilliance X-ray pulses per second each with a duration below 100 fs. This will allow the recording of diffraction patterns of single complex molecules…

Instrumentation and Detectors · Physics 2015-06-03 Jiaguo Zhang , Eckhart Fretwurst , Robert Klanner , Hanno Perrey , Ioana Pintilie , Thomas Poehlsen , Joern Schwandt

We present a widefield fluorescence microscope that integrates an event-based image sensor (EBIS) with a CMOS image sensor (CIS) for ultra-fast microscopy with spectral distinction capabilities. The EBIS achieves temporal resolution of…

Optics · Physics 2024-10-22 Richard G. Baird , Apratim Majumder , Rajesh Menon

An analysis of the equations used for modeling thermal arsenic diffusion in silicon has been carried out. It was shown that for arsenic diffusion governed by the vacancy-impurity pairs and the pairs formed due to interaction of impurity…

Materials Science · Physics 2015-04-28 O. I. Velichko

Today's high-power laser systems are capable of reaching photon intensities up to $10^{22}$ W/cm^2, generating plasmas when interacting with material. The high intensity and ultrashort laser pulse duration (fs) make direct observation of…