Results 21 to 30 of about 5,782,871 (345)
Attosecond physics at the nanoscale [PDF]
, 2017 Recently two emerging areas of research, attosecond and nanoscale physics, have started to come together. Attosecond physics deals with phenomena occurring when ultrashort laser pulses, with duration on the femto- and sub-femtosecond time scales ...
Braun, A +24 more
core +5 more sources
Science of Remote Sensing, 2020 Obtaining accurate and widespread measurements of the vertical structure of the Earth’s forests has been a long-sought goal for the ecological community.
R. Dubayah +18 more
semanticscholar +1 more source
Applied Sciences, 2022 Laser beam welding is used in many areas of industry and research. There are many strategies and approaches to further improve the weld seam properties in laser beam welding. Metallography is often needed to evaluate welded seams.
Christian Nowroth +7 more
doaj +1 more source
Spatial separation of large dynamical blue shift and harmonic generation [PDF]
, 2006 We study the temporal and spatial dynamics of the large amplitude and frequency modulation that can be induced in an intense, few cycle laser pulse as it propagates through a rapidly ionizing gas. Our calculations include both single atom and macroscopic
M. V. Ammosov +4 more
core +2 more sources
Effect of spin-orbit coupling on the high harmonics from the topological Dirac semimetal Na3Bi
npj Computational Materials, 2022 In this work, we performed extensive first-principles simulations of high-harmonic generation in the topological Diract semimetal Na3Bi using a first-principles time-dependent density functional theory framework, focusing on the effect of spin-orbit ...
Nicolas Tancogne-Dejean +2 more
doaj +1 more source
Propagation of two short laser pulse trains in a $\Lambda$-type three-level medium under conditions of electromagnetically induced transparency [PDF]
, 2014 We investigate the dynamics of a pair of short laser pulse trains propagating in a medium consisting of three-level $\Lambda$-type atoms by numerically solving the Maxwell-Schr\"odinger equations for atoms and fields.
Buica, Gabriela, Nakajima, Takashi
core +2 more sources
Serial protein crystallography in an electron microscope
Nature Communications, 2020 For conventional three-dimensional microcrystal electron diffraction (3D ED/MicroED), a crystal is slowly rotated under an electron beam, leading to inevitable accumulation of radiation damage during data collection.
Robert Bücker +10 more
doaj +1 more source
Antiphase dynamics in a multimode semiconductor laser with optical injection [PDF]
, 2008 A detailed experimental study of antiphase dynamics in a two-mode semiconductor laser with optical injection is presented. The device is a specially designed Fabry-Perot laser that supports two primary modes with a THz frequency spacing. Injection in one
A. Amann +7 more
core +2 more sources
Real-time observation of a correlation-driven sub 3 fs charge migration in ionised adenine
Communications Chemistry, 2021 Sudden ionisation of larger molecules can initiate a correlation-driven process called charge migration, but due to its short time scale this process is challenging to observe.
Erik P. Månsson +17 more
doaj +1 more source
Recent advances in laser self-injection locking to high-Q microresonators [PDF]
Frontiers of Physics, 2022 The stabilization and manipulation of laser frequency by means of an external cavity are nearly ubiquitously used in fundamental research and laser applications.
N. Kondratiev +14 more
semanticscholar +1 more source