Results 261 to 270 of about 29,854 (299)

Cold strontium atoms for an optical frequency standard

IEEE Transactions on Instrumentation and Measurement, 2003
We report the capture of cold strontium atoms in a magnetooptical trap at a rate of 3/spl times/10/sup 10/ atoms/s. This is achieved with high power laser light at 461 nm generated by sum frequency mixing in a potassium titanyl phosphate (KTP) crystal using diode lasers at 813 nm and a Nd:YAG laser at 1064 nm.
J -J Zondy, A Landragin, Giorgio Santarelli   +2 more
exaly   +4 more sources

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, A Gogyan, Piotr Morzyński
exaly   +2 more sources

An optical lattice clock with strontium atoms

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
We report the preliminary operation of an optical lattice clock with Sr atoms. We describe a novel method for loading the lattice and report an optical resonance of width 260 Hz.
M Fouche, R Le Targat, A Brusch
exaly   +2 more sources

Laser-induced collisional autoionization in europium and strontium atoms

Optics Letters, 1995
An experiment that involves laser-induced collisional autoionization in europium and strontium atoms is proposed and the spectral line shape of the cross section is calculated on the basis of data available in the literature. The feasibility of the experiment both in oven cells and in a crossed-atomic-beam geometry is discussed.
Roberto Buffa, R Buffa
exaly   +3 more sources

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
openaire   +2 more sources

Electrodynamic trapping of neutral strontium atoms

International Quantum Electronics Conference, 2005., 2005
Keisuke Nagato, Masami Yasuda, Hidetoshi Katori   +2 more
exaly   +2 more sources

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
openaire   +4 more sources

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
openaire   +1 more source

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

Elastic scattering of electrons by strontium and barium atoms

Physical Review A, 1994
Differential, total, and momentum transfer cross sections for the elastic scattering of low- and intermediate-energy (0.2--100 eV) electrons by strontium and barium atoms were calculated in the relativistic polarized orbital approximation. A static part of the projectile-target interaction potential was generated by solving the Dirac-Hartree-Fock (DHF)
, Szmytkowski, , Sienkiewicz
openaire   +2 more sources