A. Laliotis - Academia.edu (original) (raw)
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State Engineering University of Armenia (Polytechnic) SEUA
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Papers by A. Laliotis
This paper presents our current measurements in a vapor nanocell aiming at a test of the distance... more This paper presents our current measurements in a vapor nanocell aiming at a test of the distance-dependence of the atom-surface interaction, when simple asymptotic descriptions may turn to be not valid. A state-of-the-art of atomsurface interaction measurements is provided as an introduction, along with the comparison with the theory of the van der Waals (or Casimir-Polder) interaction; it is followed by a presentation of the most salient features of nanocell spectroscopy.
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Annales de Physique, 2007
Fluoride materials exhibit surface resonances located in the thermal infrared. This makes them in... more Fluoride materials exhibit surface resonances located in the thermal infrared. This makes them interesting to search for a fundamental temperature dependence of the atom-surface interaction, originating in the near-field thermal emissivity of the surface. Preliminary selective reflection experiments performed on a special Cs vapour cell that includes a CaF 2 interface show a temperature dependence, yet to be analyzed.
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
The van der Waals (vW) long-range atom-surface interaction is often described as a dipole-dipole ... more The van der Waals (vW) long-range atom-surface interaction is often described as a dipole-dipole interaction, originating in the coupling between the quantum dipole fluctuations of an atom and the instantaneously induced fluctuations in the electrostatic image. Due to the finite light velocity, this atom-surface interaction is better understood in the more general frame of the Casimir-Polder theory. Recently, it was demonstrated that the Casimir-Polder interaction undergoes an observable dependence on the vacuum temperature [1]. In a shorter distance range, it is expected that thermally excited surface modes could resonantly modify the vW interaction, when it coincides with a virtual atomic absorption .
This paper presents our current measurements in a vapor nanocell aiming at a test of the distance... more This paper presents our current measurements in a vapor nanocell aiming at a test of the distance-dependence of the atom-surface interaction, when simple asymptotic descriptions may turn to be not valid. A state-of-the-art of atomsurface interaction measurements is provided as an introduction, along with the comparison with the theory of the van der Waals (or Casimir-Polder) interaction; it is followed by a presentation of the most salient features of nanocell spectroscopy.
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Annales de Physique, 2007
Fluoride materials exhibit surface resonances located in the thermal infrared. This makes them in... more Fluoride materials exhibit surface resonances located in the thermal infrared. This makes them interesting to search for a fundamental temperature dependence of the atom-surface interaction, originating in the near-field thermal emissivity of the surface. Preliminary selective reflection experiments performed on a special Cs vapour cell that includes a CaF 2 interface show a temperature dependence, yet to be analyzed.
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
The van der Waals (vW) long-range atom-surface interaction is often described as a dipole-dipole ... more The van der Waals (vW) long-range atom-surface interaction is often described as a dipole-dipole interaction, originating in the coupling between the quantum dipole fluctuations of an atom and the instantaneously induced fluctuations in the electrostatic image. Due to the finite light velocity, this atom-surface interaction is better understood in the more general frame of the Casimir-Polder theory. Recently, it was demonstrated that the Casimir-Polder interaction undergoes an observable dependence on the vacuum temperature [1]. In a shorter distance range, it is expected that thermally excited surface modes could resonantly modify the vW interaction, when it coincides with a virtual atomic absorption .