Results 101 to 110 of about 23,841 (308)
Nanosecond-Pulsed Passively Q‑Switched Fiber Laser by Using Photothermal Dynamics in a Dielectric Microcavity [PDF]
Thermal nonlinear effects have been extensively studied in whispering-gallery optical microcavities. Photothermal effect originating from high light power buildup in the microcavities plays an important role in various applications, such as thermal ...
Ping Zhao (47228) +6 more
core +1 more source
Nanosecond pulsed laser irradiation induced hierarchical micro/nanostructures on Zr-based metallic glass substrate [PDF]
, 2016 A large effective surface area is beneficial to enhance the applications of metallic glasses (MGs) in heterogeneous catalysis and biomedical engineering.
Huang H +5 more
core +1 more source
Photoinduced Deformation in the Tl4SnSe3 Single Crystals
International Journal of Electrochemical Science, 2014 mStudies of the deformation for the ternary chalcogenide crystals Tl4SnSe3was performed under illumination of the two type of pulsed lasers: nanosecond Nd:YAG laser generating at 1064 nm and nanosecond CO2 laser generating at 10.6 μm and its fourth ...
Ali H. Reshak +8 more
doaj +1 more source
Engineering Exciton g‐Factors With Light in Type‐II Heterostructures
Advanced Optical Materials, EarlyView.All‐optical approaches have emerged as cutting‐edge alternatives for ultrafast, energy‐efficient, and spatially localized tuning and switching of material properties. In our work, we demonstrate how light intensity alone can be leveraged to engineer g‐factors from a single‐type of carrier in type‐II heterostructures through Coulomb‐induced wavefunction
G. M. Jacobsen +9 more
wiley +1 more source
Advanced Optical Materials, EarlyView.High‐pressure recrystallization provides a reproducible route to high‐quality CsPbBr3${\rm CsPbBr}_{3}$ thin films. Optimized processing at 300 bar yields smooth, pinhole‐free, single‐phase 3D perovskite layers with tunable thickness, enhanced crystallinity, reduced amplified‐spontaneous‐emission threshold, improved photostability, and phase‐transition
Asma Miled +15 more
wiley +1 more source
Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes
Advanced Optical Materials, EarlyView.Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula +17 more
wiley +1 more source
Hydrodynamic modeling of ns-laser ablation
Electronic Journal of Differential Equations, 2013 Laser ablation is a versatile and widespread technique, applied in an increasing number of medical, industrial and analytical applications. A hydrodynamic multiphase model describing nanosecond-laser ablation (ns-LA) is outlined.
David Autrique +2 more
doaj
Investigation of Surface Integrity of Conical Hole in Laser Polishing 440C Stainless Steel
MetalsIn the machining process of 440C stainless steel using ball-end milling, the generation of machined traces is an inevitable outcome. Traditional polishing methods, when applied to the milling surfaces of small conical holes, exhibit significant ...
Chuanqi Zhang +6 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Tailored amine substitution in fluorene and dibenzothiophene derivatives enables systematic control of excited‐state properties and triplet population. Combined photophysical studies, TD‐DFT calculations and time‐resolved EPR reveal how charge‐transfer character, sulfur‐induced spin–orbit coupling and triplet manifold engineering cooperate to promote ...
Francesco Ruighi +10 more
wiley +1 more source
Generation of low repetition rate sub-nanosecond pulses in doubly QML Nd:Lu0.5Y0.5VO4 and Nd:YVO4 lasers with EO and transmission SSA [PDF]
, 2015 By employing the mixed crystal Nd:Lu0.5Y0.5VO4 and the single crystal Nd:YVO4 as the laser media, the characteristics of the QML laser doubly modulated by electro-optic (BO) modulator and transmission semiconductor saturable absorber (T-SSA) are studied.
Li, Dechun +8 more
core +1 more source