Results 31 to 40 of about 1,646,931 (300)
Optical Pumping of TeH+: Implications for the Search for Varying mp/me
Atoms, 2018 Molecular overtone transitions provide optical frequency transitions sensitive to variation in the proton-to-electron mass ratio ( μ ≡ m p / m e ).
Patrick R. Stollenwerk +4 more
doaj +1 more source
Sympathetic cooling and self-oscillations in a hybrid atom-membrane system [PDF]
, 2016 Hybrid systems combining mechanical oscillators and ultracold atoms provide novel opportunities for cooling, detection and quantum control of mechanical motion with applications in precision sensing, quantum-level signal transduction and for ...
Faber, Aline
core +1 more source
The Effects of Laser Surface Modification on the Microstructure of 1.4550 Stainless Steel
MATEC Web of Conferences, 2018 In this study a stainless austenitic steel 1.4550 was laser heat treated with diode laser. The influence a gouache coating on remelted steel substrate was carry out. The cooling system during laser melted was analysis as well.
Przestacki Damian +3 more
doaj +1 more source
Optomechanical coupling between ultracold atoms and a membrane oscillator [PDF]
, 2014 In this thesis, I report on the realization of a hybrid optomechanical system in which ultracold atoms are coupled to a micromechanical membrane. The atoms are trapped in the intensity maxima of an optical standing wave formed by retroreflection of a ...
Korppi, Maria
core +1 more source
Laser Cooling of Radium Ions [PDF]
Physical Review Letters, 2019 The unstable radium nucleus is appealing for probing new physics due to its high mass, octupole deformation and energy level structure. Ion traps, with long hold times and low particle numbers, are excellent for work with radioactive species, such as radium and radium-based molecular ions, where low activity, and hence low total numbers, is desirable ...
Fan, M. +3 more
openaire +3 more sources
Robust polarization gradient cooling of trapped ions
New Journal of Physics, 2022 We implement three-dimensional polarization gradient cooling (PGC) of trapped ions. Counter-propagating laser beams near 393 nm impinge in lin ⊥ lin configuration, at a frequency below the S _1/2 to P _3/2 resonance in ^40 Ca ^+ .
Wenbing Li +5 more
doaj +1 more source
Laser-Cooled Ion Beams and Strongly Coupled Plasmas for Precision Experiments [PDF]
, 2008 The first part of this thesis summarizes the results of laser-cooling of relativistic C3+ ion beams at the ESR/GSI. It is shown that laser cooling at high beam energies is feasible and that momentum spreads much smaller than those observed for electron ...
Bussmann, Michael
core +1 more source
Photodetachment and Doppler laser cooling of anionic molecules
New Journal of Physics, 2018 We propose to extend laser-cooling techniques, so far only achieved for neutral molecules, to molecular anions. A detailed computational study is performed for ${{\rm{C}}}_{2}^{-}$ molecules stored in Penning traps using GPU based Monte Carlo simulations.
Sebastian Gerber +3 more
doaj +1 more source
Laser Cooling and Trapping of Rare-Earth-Doped Particles
Applied Sciences, 2022 This review focuses on optical refrigeration with the anti-Stokes fluorescence of rare-earth (RE)-doped low-phonon micro- and nanocrystals. Contrary to bulk samples, where the thermal energy is contained in internal vibrational modes (phonons), the ...
Galina Nemova
doaj +1 more source
Laser Cooling of Molecular Anions [PDF]
Physical Review Letters, 2015 We propose a scheme for laser cooling of negatively charged molecules. We briefly summarise the requirements for such laser cooling and we identify a number of potential candidates. A detailed computation study with C$\_2^-$, the most studied molecular anion, is carried out.
Yzombard, Pauline +4 more
openaire +5 more sources