Results 81 to 90 of about 2,589,646 (347)

Non-Hermitian coupled semiconductor laser array [PDF]

open access: yes, 2022
We propose and explore a stabilization mechanism of a semiconductor laser array based on asymmetric coupling between neighboring lasers. The stabilization scheme takes advantage of the symmetry breaking of non-Hermitian potentials.
Herrero Simon, Ramon   +3 more
core   +1 more source

Featureless Broadband Chaos Through Cascaded Optically Injected Semiconductor Lasers

open access: yesPhotonics
Optical chaos generated by a semiconductor laser under cascaded optical injection is experimentally and numerically investigated. A semiconductor slave laser under continuous-wave optical injection from a master laser is employed as the chaotic laser ...
Mohammad AlMulla
doaj   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

open access: yesAdvanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus   +8 more
wiley   +1 more source

Full characterization of a semiconductor laser beam by simultaneous capture of the near- and far-field [PDF]

open access: yes, 2010
We present a new measurement technique for fully characterizing a semiconductor laser beam. The reflections from both surfaces of a planoconvex lens are used to simultaneously capture the near- and far-field. The optical phase is then retrieved using the
Bengtsson, Jörgen   +9 more
core   +1 more source

Effective Failure Analysis for Packaged Semiconductor Lasers with a Simple Sample Preparation and Home-Made PEM System

open access: yesPhotonics, 2021
As the application requirements of semiconductor lasers continue to increase, severe challenges are brought to the reliability of semiconductor lasers.
Tianyu Sun, Lei Qiao, Mingjun Xia
doaj   +1 more source

Laser-thinning of MoS₂: on demand generation of a single-layer semiconductor. [PDF]

open access: yesNano letters (Print), 2012
Single-layer MoS(2) is an attractive semiconducting analogue of graphene that combines high mechanical flexibility with a large direct bandgap of 1.8 eV.
A. Castellanos-Gómez   +5 more
semanticscholar   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Bifurcations of composite-cavity modes in multi-stripe laser arrays [PDF]

open access: yes, 2008
We consider a semiconductor laser device, where the active region consists of parallel stripes in the longitudinal direction. In the composite cavity model, the stripes are coupled via the transversal modes of the entire compound laser device.
Wieczorek, Sebastian   +2 more
core  

Adopting Small Signal Model for the Equivalent Circuit Instrumentation of a Multi-QuantumWells Semiconductor Laser [PDF]

open access: yesEngineering and Technology Journal, 2007
In this study, results of an analysis for the MQW semiconductor laser performance are presented. This analysis considers the steady-state condition and small signal modeling to introduce optical gain, charge carrier density, current and output laser ...
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

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