Results 41 to 50 of about 488,564 (288)
Low-threshold photonic crystal laser [PDF]
, 2002 We have fabricated photonic crystal nanocavity lasers, based on a high-quality factor design that incorporates fractional edge dislocations. Lasers with InGaAsP quantum well active material emitting at 1550 nm were optically pumped with 10 ns pulses, and
Gogna, Pawan +4 more
core +2 more sources
Applied SciencesThis study introduces novel experimental systems that facilitate the nucleation, growth, aggregation, and agglomeration of ionic salt solutions, leading to structurally and functionally distinctive crystal formations.
Ion Sandu +7 more
doaj +1 more source
Multiple wavelength InGaAs quantum dot lasers using selective area epitaxy [PDF]
, 2016 The authors demonstrate multiple wavelength lasers fabricated from InGaAsquantum dots. Selective area epitaxy is used to grow the active region, consisting of five layer stack of InGaAsquantum dots with different band gapenergies in selected regions of ...
Jagadish, C. +2 more
core +1 more source
The piston Riemann problem in a photon superfluid
Nature Communications, 2022 The flow of light in nonlinear media can be considered as superfluid flow and described with quantum hydrodynamics. Here the authors demonstrate superfluid flow, optical rarefaction (retracting piston) and shock (pushing piston) wave pairs and ...
Abdelkrim Bendahmane +5 more
doaj +1 more source
Auger recombination in quantum-well InGaAsP heterostructure lasers [PDF]
, 1982 Interband nonradiative Auger recombination in quantum-well InGaAsP/InP heterostructure lasers has been calculated. It is found that the Auger rate is much reduced in the quasi two-dimensional quantum-well lasers.
Chiu, L. C., Yariv, Amnon
core +1 more source
A unified theory for surface emitting chirped circular grating lasers [PDF]
, 2009 We develop a unified theory to analyze the modal properties of surface emitting chirped circular grating lasers. Based on solving the resonance conditions which involve two types of reflectivities of chirped circular gratings, this theory is ...
Sun, Xiankai, Yariv, Amnon
core +1 more source
Solar driven lasers for power satellite applications [PDF]
, 1980 The technological feasibility of using multimagawatt lasers for space power transmission is discussed. Candidate lasers include electric discharge lasers, direct optically pumped lasers, and free electron ...
Cassady, P., Klosterman, E., Taussio, R.
core +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
High-Power Directional Emission from Microlasers with Chaotic Resonators
, 1998 High-power and highly directional semiconductor cylinder-lasers based on an optical resonator with deformed cross section are reported. In the favorable directions of the far-field, a power increase of up to three orders of magnitude over the ...
Capasso, Federico +7 more
core +4 more sources
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source