Results 21 to 30 of about 1,763,300 (351)
Progress and applications of quantum precision measurement based on SERF effect
Frontiers in Physics, 2022 With the development of quantum precision measurement technology, measurement methods based on magnetic, optical and atomic interactions have started to receive widespread attention.
Yueyang Zhai +5 more
doaj +1 more source
A novel oven structure for improving temperature uniformity of vapor cell in atomic sensors
Results in Physics, 2023 Alkali-metal vapor cells are key elements of atomic sensors. The temperature uniformity in the vapor cell is important for the sensitivity of the atomic sensors especially highly-sensitive SERF atomic magnetometers.
Yanan Gao +6 more
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Magnetic measurement system for high-field magnets
Journal of Synchrotron Radiation, 1998 One of the main principles in electrodynamics, the change of magnetic field flux inducing an EMF in a wire coil, is applied for magnetic measurement. A scheme and the main parameters of the magnetic measurement system are described. The system was successfully used for magnetic measurement of a 7 T superconducting wiggler for LSU CAMD; results are ...
V M, Borovikov +5 more
openaire +2 more sources
Triaxial closed-loop measurement based on a single-beam zero-field optically pumped magnetometer
Frontiers in Physics, 2022 In this study, we propose an approach for the simultaneous measurement of triaxial magnetic fields using a single-beam zero-field optically pumped atomic magnetometer, in which a rotational high-frequency (ω1) and another high-frequency (ω2) modulated ...
Kun Wang +14 more
doaj +1 more source
Results in Physics, 2023 In this paper, we propose a three-axis atomic magnetometer (AM), in which one light beam is divided into two orthogonal spatially separated pump beams by a lateral displacement polarized beam splitter and reflector mirrors; this scheme suppresses the ...
Lin Li +3 more
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Methods and applications of on-chip beam splitting: A review
Frontiers in Physics, 2022 The construction of large-scale integrated photonic circuit cannot be separated from the important role played by silicon-based optoelectronic devices. As a basic and important link in on-chip photon propagation, beam splitting is of great significance ...
Yuting Xu +3 more
doaj +1 more source
CORONAL MAGNETIC FIELD MEASUREMENT FROM EUV IMAGES MADE BY THE SOLAR DYNAMICS OBSERVATORY [PDF]
, 2011 By measuring the geometrical properties of the coronal mass ejection (CME) flux rope and the leading shock observed on 2010 June 13 by the Solar Dynamics Observatory (SDO) mission's Atmospheric Imaging Assembly we determine the Alfvén speed and the ...
N. Gopalswamy +4 more
semanticscholar +1 more source
, 2017 Receiver Operating Characteristics (ROC) are a powerful tool used to evaluate the performance of NDE methods; however, the need to manufacture and scan many test pieces with realistic defects means that they are expensive and time-consuming to produce ...
R. Jarvis, P. Cawley, P. Nagy
semanticscholar +1 more source
Compact optical pumping system based on offaxis freeform mirror collimation for miniaturized atomic gyroscopes [PDF]
EPJ Web of ConferencesConventional optical systems for laser beam expansion, collimation, and reflective path configurations in miniaturized atomic gyroscopes face challenges due to excessive volume and component complexity, limiting further optical integration.
Xu Yan, Chai Zhen, Li Jianli
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Sub-pT magnetic field detection by tunnel magneto-resistive sensors
Applied Physics Express, 2021 We developed tunnel magneto-resistive (TMR) sensors based on magnetic tunnel junctions (MTJs) that are able to detect a weak, sub-pT, magnetic field at a low frequency. Small detectivities of 0.94 pT/Hz1/2 at 1 Hz and 0.05 pT/Hz1/2 at 1 kHz were achieved
M. Oogane +10 more
semanticscholar +1 more source