Results 261 to 270 of about 29,739 (303)

Microfabricated strontium atomic vapor cells

Optics Letters, 2023
We demonstrate strontium (Sr) atomic vapor cells having a total external volume of 0.63 cm3 that can operate above 300 °C for times exceeding 380 h. The cells are fabricated using micromachined silicon frames anodically bonded to glass windows that have a 20-nm thick protective layer of Al2O3 deposited on the interior surfaces. The presence of Sr vapor
Jacob M. Pate, John Kitching, Matthew T. Hummon   +2 more
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Ultracold Collisions in Atomic Strontium

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007
Photoassociative spectroscopy in an intercombination-line magneto-optical trap has determined the ground-state s-wave scattering lengths of88Sr and86Sr. Recent work with a crossed optical dipole trap allows us to study atoms in metastable states.
T. C. Killian, Y. N. Martinez, P. G. Mickelson, S. B. Nagel, P. Pellegrini, R. Côté   +5 more
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Efficient cooling and trapping of strontium atoms

Optics Letters, 2003
We report the capture of cold strontium atoms in a magneto-optical trap (MOT) at a rate of 4 x 10(10) atoms/s. The MOT is loaded from an atomic beam decelerated by a Zeeman slower operating with a focused laser beam. The 461-nm laser, used for both cooling and trapping, was generated by sum-frequency mixing in a KTP crystal with diode lasers at 813 nm ...
Courtillot, I., Quessada, A., Kovacich, R., Zondy, J-J., Landragin, A., Clairon, A., Lemonde, P.   +6 more
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Atomic absorption determination of strontium

Spectrochimica Acta Part B: Atomic Spectroscopy, 1968
Abstract The determination of strontium by atomic absorption speotroscopy using airpropane and air-acetylene flames is described. The influence of flame temperature on extinction coefficients, detection limits, and reproducibility of measurements is discussed.
R. Intonti, A. Stacchini
openaire   +1 more source

Strontium Optical Atomic Clocks in KL FAMO Blue Detuned Lattice for Strontium Atoms and Project of a Continuous Active Optical Clock with Cold Strontium Atoms

2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC), 2019
We would like to report on a design of new type of optical atomic clock - a continuous active clock with cold strontium atoms, as well as on progress with lattice clocks in KL FAMO. The active clock design will use blue detuned optical lattice to provide the Lamb-Dicke regime in the optical cavity, where conditions for superradiance emission on the ...
M. Bober, P. Ablewski, S. Bilicki, J. Borkowski, M.A. Butt, D. Dziczek, A. Gogyan, M. Naroznik, V. Singh, A. Tonoyan, A. Gogyan, M. Witkowski, M. Zawada   +12 more
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Atomic Displacements in Perovskite Strontium Titanate

Annalen der Physik, 1970
AbstractThe relative atomic displacements of the sublattices of perovskite strontium titanate associated with optical frequency mode are calculated using all possible interionic couplings. The couplings are estimated from the observed optical frequencies of SrTiO3. The results of the calculation are plotted as a function of a parameter Φ(∼T – Tc).
V. K. Jaiswal, P. K. Sharma
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Excitation of strontium atom in electron–atom collisions

Journal of Applied Spectroscopy, 2010
The excitation of 3D levels of strontium atom by slow monoenergetic electrons has been studied experimentally. Thirty six excitation cross-sections were measured at 30-eV electron energy. Optical excitation functions for most of the transitions were recorded in the 0–200-eV electron-energy range.
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Towards a Continuous Active Optical Atomic Clock With Cold Strontium Atoms

2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS), 2021
We present a setup designed for an active optical atomic clock operating at the clock transition (1S0-3P0) with cold strontium atoms. The apparatus is designed for continuous operation, and it is designed for both 87Sr and 88Sr isotopes.
M. Bober, S. Bilicki, A. Gogyan, D. Kovacic, P. Morzynski, M. Naroznik, A. Tonoyan, V. Singh, M. Witkowski, M. Zawada   +9 more
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Atomic Layer Deposition of Ruthenium Films on Strontium Titanate

Journal of Nanoscience and Nanotechnology, 2011
Atomic layer deposition of ruthenium on SrTiO3 layers was investigated using (C2H5C5H4). (NC4H4)Ru and air as precursors. For comparison, the growth was studied also on ZrO2 films and SiO2/Si surfaces. Deposition temperature was 325 degrees C. Using rather short but intense air pulses, smooth and uniform Ru films were deposited on SrTiO3.
Kaupo, Kukli, Marianna, Kemell, Jun, Lu, Lars, Hultman, Stefan, Riedel, Jonas, Sundqvist, Mikko, Ritala, Markku, Leskelä   +7 more
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