Results 21 to 30 of about 2,314,871 (292)

Polarizing ³He by Spin Exchange with Potassium [PDF]

open access: yes, 2004
We present experimental studies on the spin-exchange optical pumping of ³He using alkali metal potassium vapor. High ³He polarizations are achieved using lower laser power than traditional rubidium-³He pumping studies.
Wang, Guodong
core   +1 more source

The polarization and the fundamental sensitivity of 39K (133Cs)-85Rb-4He hybrid optical pumping spin exchange relaxation free atomic magnetometers

open access: yesScientific Reports, 2017
The hybrid optical pumping spin exchange relaxation free (SERF) atomic magnetometers can realize ultrahigh sensitivity measurement of magnetic field and inertia.
Jian-Hua Liu   +6 more
doaj   +1 more source

Optical pumping of quantum dot micropillar lasers [PDF]

open access: yes, 2021
© 2021 Optica Publishing Group. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained.
Furfaro, L.   +9 more
core   +1 more source

Spin phenomena in semiconductor quantum dots [PDF]

open access: yes, 2013
This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core   +6 more sources

Efficient optical pumping using hyperfine levels in 145Nd3+:Y2SiO5 and its application to optical storage

open access: yesNew Journal of Physics, 2018
Efficient optical pumping is an important tool for state initialization in quantum technologies, such as optical quantum memories. In crystals doped with Kramers rare-earth ions, such as erbium and neodymium, efficient optical pumping is challenging due ...
Emmanuel Zambrini Cruzeiro   +6 more
doaj   +1 more source

Numerical analysis of the optical pumping process coupled with 23Na D2 manifold modeled as a partially resolved hyperfine structure

open access: yesAIP Advances, 2020
All magnetometers using alkali atoms rely on the monochromatic light driving the optical pumping process in the D1 or D2 line to create spin-polarized atoms.
Xiaoxu Zhang   +4 more
doaj   +1 more source

Optical Control of Superlattices States Formed Due to Electronic Phase Separation in Multiferroic Eu0.8Ce0.2Mn2O5

open access: yesNanomaterials, 2021
The effect of optical pumping and magnetic field on properties of the electronic phase separation regions, which are the multiferroic semiconductor heterostructures in the form of superlattices, have been studied in Eu0.8Ce0.2Mn2O5.
Viktoriya Sanina   +2 more
doaj   +1 more source

Spin polarization of 87Rb atoms with Xe gas and high-pressure buffer gas in a cubic cell

open access: yesAIP Advances, 2019
We simulated the optical pumping rate of 87Rb atoms with Xe and high-pressure buffer gas in a cubic cell. We calculated absorption cross-section as a function of pumping laser frequency by considering a pressure and Doppler broadening as gas temperature ...
Hoon Yu, Jai Seung Yoo
doaj   +1 more source

Proposal for Deep-UV Emission from a Near-Infrared AlN/GaN-Based Quantum Cascade Device Using Multiple Photon Up-Conversion

open access: yesCrystals, 2023
We propose the use of an n-doped periodic AlN/GaN quantum cascade structure for the optical up-conversion of multiple near-infrared (near-IR) photons into deep-ultraviolet (deep-UV) radiation.
Daniel Hofstetter   +2 more
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

open access: yes, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll   +13 more
core   +1 more source

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