Results 51 to 60 of about 1,224,469 (239)

Delayed optical feedback-regulated artificial soliton molecule in a femtosecond optical parametric oscillator

open access: yesPhotoniX
Soliton molecules (SMs) play a crucial role in nonlinear optical systems, enriching our understanding of nonlinear science through the study of their interaction dynamics.
Yu Cai   +4 more
doaj   +1 more source

Exciton-phonon and exciton-exciton interactions in GaAs by time-resolved optical reflectivity

open access: yesResults in Physics, 2019
We present the study of the ultrafast carrier dynamics in bulk GaAs at 6 K, by time-resolved optical reflectivity in a wide range of excitation densities.
Xu-Chen Nie   +10 more
doaj   +1 more source

Nonthermal phase transitions in semiconductors induced by a femtosecond extreme ultraviolet laser pulse [PDF]

open access: yes, 2013
Part of Focus on High Energy Density Physics. In this paper, we present a novel theoretical approach, which allows the study of nonequilibrium dynamics of both electrons and atoms/ions within free-electron laser excited semiconductors at femtosecond time
Jeschke, H. O.   +3 more
core   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

open access: yesAdvanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela   +4 more
wiley   +1 more source

50-W, >2-μJ SESAM-modelocked Ho:YAG thin-disk oscillator at 2.1 μm [PDF]

open access: yesEPJ Web of Conferences, 2022
Tomilov Sergei   +6 more
doaj   +1 more source

Living cell‐laden hydrogels: Unleashing the future of responsive biohybrid systems

open access: yesResponsive Materials, 2023
Responsive biohybrid systems have the potential to overcome limitations of both natural and artificial machines in terms of efficiency, accuracy, and functionality.
Xuejia Hu   +4 more
doaj   +1 more source

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

open access: yesAdvanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang   +4 more
wiley   +1 more source

Watt-Level, Narrow-Linewidth, Tunable Green Semiconductor Laser with External-Cavity Synchronous-Locking Technique

open access: yesSensors
External-cavity GaN semiconductor lasers at blue wavelengths enable narrow-linewidth and high-power output but is difficult at >500 nm green wavelengths due to the so-called ‘green gap’.
Chunna Feng   +4 more
doaj   +1 more source

Optical–Optical Synchronization Between Two Independent Femtosecond Yb-Fiber Lasers With 10 –20 Instability in 105 s

open access: yesIEEE Photonics Journal, 2017
Optical–optical synchronization between independent mode-locked lasers with attosecond timing precision is essential for arbitrary electric-field waveform generation, subcycle optical pulse synthesis, optical frequency transfer as well as next ...
Haochen Tian   +4 more
doaj   +1 more source

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