Results 11 to 20 of about 65,086 (261)

Temperature-Dependent Excitonic Photoluminescence and Nonlinear Absorption of CdTe Nanocrystal/Polyvinyl Alcohol Films [PDF]

open access: yesNanomaterials, 2021
The temperature dependence of the excitonic photoluminescence (PL) and nonlinear absorption characteristics of CdTe nanocrystals (NCs)/polyvinyl alcohol (PVA) film are investigated using steady-state/time-resolved PL spectroscopy and Z-scan methods.
Qing Chang   +3 more
doaj   +2 more sources

Broadband Visible Nonlinear Absorption and Ultrafast Dynamics of the Ti3C2 Nanosheet [PDF]

open access: yesNanomaterials, 2020
The Ti3C2 nanosheet, as a new two-dimensional (2D) group, has been found to have attractive characteristics as material for electromagnetic shielding and energy storage.
Yabin Shao   +5 more
doaj   +2 more sources

Hot-carrier tunable abnormal nonlinear absorption conversion in quasi-2D perovskite [PDF]

open access: yesNature Communications, 2022
Controlling the high-power laser transmittance is built on the diverse manipulation of multiple nonlinear absorption processes in the nonlinear optical materials.
Gang Wang   +8 more
doaj   +2 more sources

Nonlinear absorption and scattering of a single plasmonic nanostructure characterized by x-scan technique [PDF]

open access: yesBeilstein Journal of Nanotechnology, 2019
Nonlinear nanoplasmonics is a largely unexplored research area that paves the way for many exciting applications, such as nanolasers, nanoantennas, and nanomodulators.
Tushar C. Jagadale   +2 more
doaj   +2 more sources

Femtosecond Optical Nonlinearity of Nanodiamond Suspensions

open access: yesApplied Sciences, 2021
High pressure-high temperature (HP-HT) nanodiamonds and detonation nanodiamonds have unique optical properties and are promising materials for various applications in photonics.
Gennady M. Mikheev   +6 more
doaj   +1 more source

Nonlinear Absorption and Ultrafast Dynamics of Ag Nanoparticle

open access: yesPhotonics, 2021
Resonant nonlinear optical absorption of silver nanoparticles was studied experimentally via open aperture Z-scan using 130 fs, 400 nm laser pulses.
Jijuan Jiang   +3 more
doaj   +1 more source

Wavelength-Dependent Nonlinear Absorption in Platinum Nanoparticles at Off-Resonant Wavelength

open access: yesPhotonics, 2022
In order to obtain optical nonlinear materials with high transparency and low propagation loss in the visible and infrared range, noble metal materials in the off-resonant band have become a hot spot in the optical field in recent years.
Chunyu Chen   +3 more
doaj   +1 more source

A Review on Ultrafast Laser Microwelding of Transparent Materials and Transparent Material–Metals

open access: yesMetals, 2023
Transparent hard and brittle (THB) materials have generated significant interest due to their excellent properties, such as wide spectral transmittance, heat resistance, chemical inactivity and high mechanical strength. To further explore the application
Jiayi Xu   +9 more
doaj   +1 more source

GHz Compact Laser Enabled by GaSb Nanowires as Saturable Absorbers

open access: yesAdvanced Photonics Research, 2023
Owing to the narrow bandgap and excellent optoelectronic properties, III‐Sb nanowires (NWs) enable efficient optical response from near‐infrared to mid‐infrared, making them ideal candidates for broadband optical modulation.
Yanxue Yin   +7 more
doaj   +1 more source

Nonlinear Absorptions

open access: yesJournal of Functional Analysis, 1993
Let \(A\) be an \(m\)-completely accretive operator in \(L^ 1(\Omega)\), where \((\Omega,{\mathcal B},\mu)\) is a \(\sigma\)-finite measure space. Let \(j: \Omega\times\mathbb{R}\to [0,\infty]\) be measurable in \(x\in\Omega\), convex and lower semicontinuous in \(r\in\mathbb{R}\), with \(j(x,0)=0\).
Benilan, P., Wittbold, P.
openaire   +3 more sources

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