Results 21 to 30 of about 4,449,071 (303)
All-optical nonequilibrium pathway to stabilising magnetic Weyl semimetals in pyrochlore iridates
Nature Communications, 2018 Topological states may emerge in nonequilibrium but the mechanisms are much less understood. Here Topp et al. propose a nonequilibrium route to obtain the magnetic Weyl semimetallic phase in pyrochlore iridates by ultrafast modification of the effective ...
Gabriel E. Topp +4 more
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Metals, 2020 Welding by laser beam is a method for creating deep and narrow welds with low influence on the surrounding material. Nevertheless, the microstructure and mechanical properties change, and highly alloyed materials are prone to segregation. A new promising
Jan Grajczak +6 more
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Ultra-strong spin–orbit coupling and topological moiré engineering in twisted ZrS2 bilayers
Nature Communications, 2022 Studies of twisted bilayer transition metal dichalcogenides have so far focused only on those containing group-VI metals. Here, the authors predict that twisted bilayers of ZrS2, with the group-IV metal Zr, form an emergent moiré Kagome lattice with a ...
Martin Claassen +3 more
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Dynamics of Semiconductor Lasers under External Optical Feedback from Both Sides of the Laser Cavity
Photonics, 2022 To increase the spectral efficiency of coherent communication systems, lasers with ever-narrower linewidths are required as they enable higher-order modulation formats with lower bit-error rates.
Mónica Far Brusatori, Nicolas Volet
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Dynamical localization in microdisk lasers
Optics Express, 2005 We demonstrate the lasing action from a dynamically localized mode in a microdisk resonator with rough boundary. Although substantial boundary roughness and surface defects in our devices imply strong light scattering and destroy the regular whispering gallery modes, the destructive interference of the scattered light leads to the dynamical Anderson ...
Wei, Fang +3 more
openaire +2 more sources
“Amplified Spontaneous Emission” in Micro- and Nanolasers
Atoms, 2021 Amplified Spontaneous Emission is ubiquitous in systems with optical gain and is responsible for many opportunities and shortcomings. Its role in the progression from the simplest form of thermal radiation (single emitter spontaneous emission) all the ...
Gian Luca Lippi
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Sensors, 2023 A novel method for the generation of an optical frequency comb (OFC) is presented. The proposed approach uses a laser diode with optical feedback and operating at a specific nonlinear dynamic state named periodic window.
Zhuqiu Chen +6 more
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Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloy [PDF]
, 2012 The direct metal deposition (DMD) with laser is a free-form metal deposition process for manufacturing dense pieces, which allows generating a prototype or small series of near net-shape structures. One of the most critical issues is that produced pieces
GORNY, Cyril +7 more
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Journal of Advanced Research, 2010 Currently a popular area in nanomedicine is the implementation of plasmonic gold nanoparticles for cancer diagnosis and photothermal therapy, attributed to the intriguing optical properties of the nanoparticles.
Xiaohua Huang, Mostafa A. El-Sayed
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Nature Communications, 2021 Twisted van der Waals systems are known to host flat electronic bands, originating from moire potential. Here, the authors predict from purely geometric considerations a new type of nearly dispersionless bands in twisted bilayer MoS2, resulting from ...
Lede Xian +6 more
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