The Swedish Guide • 2020 by bigsciencesweden - issuu

Experimental Methods for Spin- and Angle-Resolved - JoVE

But it can also be circularly polarized, at right, so its waves spiral like a corkscrew around Guo B. et al. Topological insulator: Bi 2 Se 3 /polyvinyl alcohol film-assisted multi-wavelength ultrafast erbium-doped fiber laser. J. Appl. Phys. 117, 063108 (2015). [Google Scholar] Wang Q. et al.

Topological insulator laser

2019-5-22 · topological insulators can become saturated under strong exci-tation. In this work, with Bi 2Se 3 as an example, it was demon-strated that a topological insulator can modulate the operation of a bulk solid-state laser by taking advantage of its saturable absorption. The … Topological photonics has recently been proved a robust framework for manipulating light. Active topological photonic systems, in particular, enable richer fundamental physics by employing nonlinear light-matter interactions, thereby opening a new landscape for applications such as topological lasing. Here we propose an all-dielectric topological insulator laser scheme in telecommunication 2020-1-1 2014-4-28 · Abstract: We demonstrated the dual-wavelength simultaneously Q-switched Nd: Lu 2 O 3 laser with a topological insulator Bi 2 Se 3 as the Q-switcher. The continuous-wave Nd:Lu 2 O 3 crystal laser with the slope efficiency of 31% was achieved, and the first Nd:Lu 2 O 3 pulsed laser operation was reported, as far as we know. By using the wavelength-insensitive saturable absorption of topological 2019-11-11 · Determining optimized conditions necessary to achieve high-quality films by pulsed laser deposition (PLD) for materials with multiple volatile elements is challenging.

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Authors: Sergey K. Ivanov, Yiqi Zhang, Yaroslav V. Kartashov, Dmitry V. Skryabin (Submitted on 29 Oct 2019) Abstract: We introduce a class of topological lasers based on the photonic Floquet topological insulator concept. The proposed system is realized as a truncated array of the lasing helical Topological insulators are a phase of matter with an insulating bulk and conducting edges.

En praktisk topologisk isolatormättbar absorberare för

Topological insulators are a game-changing class of materials; charged particles can flow freely on their edges and route themselves around defects, but can't pass through their interiors.

To the best of our knowledge, this is the highest output power for the pulsed fluoride fiber laser around 2.8 μm modulated by the two-dimensional Dirac material. This letter reveals that the topological insulator can be a kind of promising nonlinear modulator for a mid-infrared laser. 2019-5-22 · topological insulators can become saturated under strong exci-tation.
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A topological insulator is an extraordinary material - it acts as an electrical bulk insulator that allows an electrical current flow along its surface. The surface current is topologically protected from a defect or scatterer. 2020-7-21 For physicists, zirconium pentatelluride (ZrTe 5) is a particularly interesting topological material because it exists in a wide variety of topological phases.

AB - Topological insulators are phases of matter characterized by topological edge States that propagate in a unidirectional manner that is robust to imperfections and disorder. Scientists and engineers have created the first electrically-driven 'topological' laser, which has the ability to route light particles around corners -- and to cope with defects in the Studies on three dimensional topological insulators (TIs) such as Bi 2 Te 3, Bi 2 Se 3, and Sb 2 Te 3 over the past decade have been intense due to their unique physical properties and potential applications for spintronics and quantum computing.
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TOPOLOGICAL INSULATORS - Avhandlingar.se

2020-11-23 2020-10-7 · From all of this activity, it is now quite clear that currently the topological insulator laser is the most promising application of topological photonics, with many new ideas emerging, for example, utilizing topology in synthetic dimensions to force an array of semiconductor lasers to emit mode-locked pulses , which could overcome a challenge of three decades. To the best of our knowledge, this is the highest output power for the pulsed fluoride fiber laser around 2.8 μm modulated by the two-dimensional Dirac material. This letter reveals that the topological insulator can be a kind of promising nonlinear modulator for a mid-infrared laser.