Results 51 to 60 of about 22,663 (294)
Microscale whispering-gallery-mode light sources with lattice-confined atoms
Scientific Reports, 2021 Microlasers, relying on the strong coupling between active particles and optical microcavity, exhibit fundamental differences from conventional lasers, such as multi-threshold/thresholdless behavior and nonclassical photon emission.
Deshui Yu, Frank Vollmer
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Results in Physics, 2023 We experimentally determine the absolute frequencies and hyperfine splittings of the 6s6p 3P0,2 − 6s7s 3S1 transitions of ultracold 171Yb atoms in an optical lattice.
Hao Qiao +6 more
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Advanced Engineering Materials, EarlyView.This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani +2 more
wiley +1 more source
Frequency Measurements of Superradiance from the Strontium Clock Transition
Physical Review X, 2018 We present the first characterization of the spectral properties of superradiant light emitted from the ultranarrow, 1-mHz-linewidth optical clock transition in an ensemble of cold ^{87}Sr atoms. Such a light source has been proposed as a next-generation
Matthew A. Norcia +8 more
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, 2005 We develop a method of spectroscopy that uses a weak static magnetic field to enable direct optical excitation of forbidden electric-dipole transitions that are otherwise prohibitively weak.
A. Taichenachev +9 more
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Advanced Engineering Materials, EarlyView.Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek +5 more
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A strontium lattice clock with inaccuracy and its frequency
New Journal of Physics, 2014 We have measured the absolute frequency of the optical lattice clock based on ^87 Sr at PTB with an uncertainty of $3.9\times {{10}^{-16}}$ using two caesium fountain clocks.
Stephan Falke +12 more
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Prospects for a mHz-linewidth laser
, 2009 We propose a new light source based on having alkaline-earth atoms in an optical lattice collectively emit photons on an ultra-narrow clock transition into the mode of a high Q-resonator.
D. Meiser +5 more
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Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
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Comparing a mercury optical lattice clock with microwave and optical frequency standards
New Journal of Physics, 2016 In this paper we report the evaluation of an optical lattice clock based on neutral mercury with a relative uncertainty of $1.7\times {10}^{-16}$ . Comparing this characterized frequency standard to a ^133 Cs atomic fountain we determine the absolute ...
R Tyumenev +11 more
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