Results 41 to 50 of about 2,864,935 (371)
Suppression of spin-pumping by a MgO tunnel-barrier
, 2009 Spin-pumping generates pure spin currents in normal metals at the ferromagnet (F)/normal metal (N) interface. The efficiency of spin-pumping is given by the spin mixing conductance, which depends on N and the F/N interface.
Bader, S. D. +4 more
core +1 more source
Open Geosciences, 2016 In order to determine the groundwater resources and potentials of the Khanewal District of Pakistan, a geophysical method in combination with pumping test data were used.
Akhter Gulraiz, Hasan M.
doaj +1 more source
Electrically pumped hybrid plasmonic waveguide
Optics Express, 2014 Active plasmonic waveguiding has become a key requirement for designing and implementing nanophotonic devices. We study theoretically the performance of an Au/GaSb-based, metal-insulator-semiconductor (MIS) structure acting as a hybrid electrically pumped waveguide with gain.
Thamani, Wijesinghe +2 more
openaire +2 more sources
Wideband and on-chip excitation for dynamical spin injection into graphene [PDF]
, 2018 Graphene is an ideal material for spin transport as very long spin relaxation times and lengths can be achieved even at room temperature. However, electrical spin injection is challenging due to the conductivity mismatch problem.
Indolese, D. I. +5 more
core +2 more sources
Perovskite lasers: From optical pumping to electrical pumping
FlexMatIntegrated photonics and quantum information technologies demand compact, energy‐efficient, and wavelength‐tunable coherent light sources. Metal halide perovskites have recently emerged as a versatile class of gain media for photonic applications ...
Kang Wang +10 more
doaj +1 more source
Mechano-hydraulic pumping solutions for reduction off energy losses in agricultural mobile machinery [PDF]
E3S Web of Conferences, 2020 Hydraulic digital power consists in a hydraulic plant having one or more discreet valued components actively with which we are controlling the system output flow. In this paper authors study a solution of 4 fixed pumps parallel connected.
Hristea Alexandru +3 more
doaj +1 more source
An electrically pumped polariton laser
Nature, 2013 Conventional semiconductor laser emission relies on stimulated emission of photons, which sets stringent requirements on the minimum amount of energy necessary for its operation. In comparison, exciton-polaritons in strongly coupled quantum well microcavities can undergo stimulated scattering that promises more energy-efficient generation of coherent ...
Schneider, Christian +15 more
openaire +3 more sources
A laser head for simultaneous optical pumping of several dye lasers [PDF]
, 1973 Device accomplishes simultaneous optical pumping using single flashlamp and electrical driver. Dye lasers require relatively low energy to operate (low-threshold pumping requirement) and provide simple method for producing simultaneous independent laser ...
Mcalexander, B. T., Mumola, P. B.
core +1 more source
Optically enhanced production of metastable xenon
, 2016 Metastable states of noble gas atoms are typically produced by electrical discharge techniques or "all-optical" excitation methods. Here we combine electrical discharges with optical pumping to demonstrate "optically enhanced" production of metastable ...
Franson, J. D. +2 more
core +1 more source
Optimal design of a microcavity organic laser device under electrical pumping.
Optics Express, 2011 The quality factor of microcavity organic lasers, designed for operation under electric pumping, has been numerically investigated. The microcavity structure consists of an organic light emitting diode set in between multilayer dielectric mirrors ...
M. Chakaroun +7 more
semanticscholar +1 more source