Controling the type of lasing modes in disordered media based on GaAs-AlGaAs nanowires

2021 ◽  
Author(s):  
Mohammad Rashidi ◽  
Tuomas Haggren ◽  
Zhicheng Su ◽  
Chennupati Jagadish ◽  
Sudha Mokkapati ◽  
...  
Keyword(s):  
Disordered Media ◽  
Lasing Modes

LBE Flows in Disordered Media

2018 ◽  
Author(s):  
Sauro Succi
Keyword(s):  
Porous Media ◽  
Fluid Mechanics ◽  
Condensed Matter ◽  
Disordered Media ◽  
Environmental Sciences ◽  
Science And Engineering ◽  
Particle Trajectories ◽  
Irregular Geometries ◽  
Numerical Tool ◽  
Bounce Back

The study of transport phenomena in disordered media is a subject of wide interdisciplinary concern, with many applications in fluid mechanics, condensed matter, life and environmental sciences as well. Flows through grossly irregular (porous) media is a specific fluid mechanical application of great practical value in applied science and engineering. It is arguably also one of the applications of choice of the LBE methods. The dual field–particle character of LBE shines brightly here: the particle-like nature of LBE (populations move along straight particle trajectories) permits a transparent treatment of grossly irregular geometries in terms of elementary mechanical events, such as mirror and bounce-back reflections. These assets were quickly recognized by researchers in the field, and still make of LBE (and eventually LGCA) an excellent numerical tool for flows in porous media, as it shall be discussed in this Chapter.

scholarly journals Anomalous Anderson localization behavior in gain-loss balanced non-Hermitian systems

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 443-452
Author(s):  
Tianshu Jiang ◽  
Anan Fang ◽  
Zhao-Qing Zhang ◽  
Che Ting Chan
Keyword(s):  
Wave Propagation ◽  
Electromagnetic Waves ◽  
Anderson Localization ◽  
Random Media ◽  
Normal Incidence ◽  
Disordered Media ◽  
One Dimensional ◽  
Gain Loss ◽  
The Waves ◽  
Localization Behavior

AbstractIt has been shown recently that the backscattering of wave propagation in one-dimensional disordered media can be entirely suppressed for normal incidence by adding sample-specific gain and loss components to the medium. Here, we study the Anderson localization behaviors of electromagnetic waves in such gain-loss balanced random non-Hermitian systems when the waves are obliquely incident on the random media. We also study the case of normal incidence when the sample-specific gain-loss profile is slightly altered so that the Anderson localization occurs. Our results show that the Anderson localization in the non-Hermitian system behaves differently from random Hermitian systems in which the backscattering is suppressed.

scholarly journals Topological Metric Detects Hidden Order in Disordered Media

2021 ◽  
Vol 126 (4) ◽  
Author(s):  
Dominic J. Skinner ◽  
Boya Song ◽  
Hannah Jeckel ◽  
Eric Jelli ◽  
Knut Drescher ◽  
...  
Keyword(s):  
Disordered Media ◽  
Hidden Order

Numerical study of random lasing in three dimensional amplifying disordered media

2012 ◽  
Vol 285 (6) ◽  
pp. 1314-1322 ◽  
Author(s):  
Abbas Ghasempour Ardakani ◽  
Ali Reza Bahrampour ◽  
Seyed Mohammad Mahdavi ◽  
Mojtaba Golshani Gharyeh Ali
Keyword(s):  
Numerical Study ◽  
Three Dimensional ◽  
Disordered Media ◽  
Random Lasing

Comparison of the lasing modes of a microdisk and a microring

2015 ◽  
Author(s):  
Anna Zolotukhina ◽  
Alexander Spiridonov ◽  
Evgenii Karchevskii ◽  
Alexander I. Nosich
Keyword(s):  
Lasing Modes

scholarly journals Constant-pressure sound waves in non-Hermitian disordered media

2018 ◽  
Vol 14 (9) ◽  
pp. 942-947 ◽  
Author(s):  
Etienne Rivet ◽  
Andre Brandstötter ◽  
Konstantinos G. Makris ◽  
Hervé Lissek ◽  
Stefan Rotter ◽  
...  
Keyword(s):  
Constant Pressure ◽  
Disordered Media ◽  
Sound Waves
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