Results 61 to 70 of about 88,049 (304)
Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response [PDF]
, 2019 Polyhydroxyalkanoates (PHAs) have emerged as a promising biodegradable and biocompatible material for scaffold manufacturing in the tissue engineering field and food packaging. Surface modification is usually required to improve cell biocompatibility and/
Basnett, P. +7 more
core +2 more sources
Advanced Functional Materials, EarlyView.Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum +5 more
wiley +1 more source
Picosecond laser filamentation in air
New Journal of Physics, 2016 The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically.
Andreas Schmitt-Sody +4 more
doaj +1 more source
Over 20-W Mid-Infrared Picosecond Optical Parametric Oscillator
IEEE Photonics Journal, 2015 We report on a high-average-power mid-infrared picosecond optical parametric oscillator (OPO) synchronously pumped by a Nd:YVO4 mode-locked laser. By use of the MgO-doped periodically poled LiNbO3 as the nonlinear crystal, up to 20.2-W picosecond laser ...
Zhipeng Qin +4 more
doaj +1 more source
Picosecond Mode-Locking And X-Band Modulation Of Semiconductor Lasers [PDF]
, 1983 Recent developments in two areas of high speed semiconductor lasers will be addressed: (1) passive mode-locking of a segmented-contact semiconductor laser with a reliable, controllable saturable absorber which produces stable picosecond optical pulses ...
Harder, C., Lau, K., Yariv, A.
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Picosecond Holographic-Grating Spectroscopy [PDF]
Science, 1987 Interfering light waves produce an optical interference pattern in any medium that interacts with light. This modulation of some physical parameter of the system acts as a classical holographic grating for optical radiation. When such a grating is produced through interaction of pulsed light waves with an optical transition, a transient grating is ...
D A, Wiersma, K, Duppen
openaire +2 more sources
Advanced Functional Materials, EarlyView.We report phosphine‐oxide interlayers for wide‐bandgap perovskite solar cells, in which tuned P = O Lewis basicity enables selective passivation of buried NiOx/perovskite interfaces and introduces interfacial dipoles that strengthen the built‐in field.
JeeHee Hong +6 more
wiley +1 more source
The influence of the excitation pulse length on ultrafast magnetization dynamics in nickel
Structural Dynamics, 2015 The laser-induced demagnetization of a ferromagnet is caused by the temperature of the electron gas as well as the lattice temperature. For long excitation pulses, the two reservoirs are in thermal equilibrium.
A. Fognini +5 more
doaj +1 more source
Generation and measurement of sub-picosecond electron bunch in photocathode rf gun
, 2013 We consider a scheme to generate sub-picosecond electron bunch in the photocathode rf gun by improving the acceleration gradient in the gun, suitably tuning the bunch charge, the laser spot size and the acceleration phase, and reducing the growth of ...
He, Zhiagng, Jia, Qika, Li, Weiwei
core +1 more source
Picosecond ionization dynamics in femtosecond filaments at high pressures [PDF]
, 2017 We investigate the plasma dynamics inside a femtosecond-pulse-induced filament generated in an argon gas for a wide range of pressures up to 60 bar. At higher pressures, we observe ionization immediately following a pulse, with up to a threefold increase
Gaeta, AL +9 more
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