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Mileti, Gaetano

Nom
Mileti, Gaetano
Affiliation principale
Site web
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Professeur titulaire
Email
gaetano.mileti@unine.ch
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https://libra.unine.ch/handle/123456789/479

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  • Publication
    Métadonnées seulement
    Optimizing a high-stability cw laser-pumped Rubidium gas-cell frequency standard
    (USA: Maleki Lute, 2009)
    Affolderbach, Christoph 
    ;
    Gruet, Florian 
    ;
    Miletic, Danijela 
    ;
    Mileti, Gaetano 
    We report on our development of a compact and high-performance laser-pumped Rubidium atomic frequency standard. The clock design is based on optical-microwave double-resonance using cw optical pumping, and a physical realization as simple as possible. Main development goals are a short-term instability of ≤ 6 × 10-13 τ-1/2 and a flicker floor of ≤ 1 × 10-14 up to one day. Here we discuss our approaches for controlling the clock's main physical parameters in view of optimized frequency stability.
  • Publication
    Métadonnées seulement
    Evaluation of the lin
    (USA: Lute Maleki, 2009)
    Breschi, Evelina
    ;
    Mileti, Gaetano 
    ;
    Kazakov, G.
    ;
    Matisov, B.
    ;
    Lammegger, R.
    ;
    Windolz, L.
    We have investigated the lin∥lin CPT signal in the 87Rb D1 manifold when the atoms are contained in low pressure buffer gas cells. We predict the achievable clock frequency stability, basing our considerations on the signal-to-noise measurements. We show that a short-term stability of about 2 · 10-11 τ1/2 may be reached in a compact system using a modulated VCSEL, this value is mainly limited by the detection noise level and can be improved up to a factor 4 by using high frequency phase sensitive detection. Under the same experimental condition a challenging short-term stability of 1-3 · 10-13 τ1/2 can be achieved by using the PL ECDLs.
  • Publication
    Métadonnées seulement
    CONTINUOUS FOUNTAIN CS STANDARD: STABILITY AND ACCURACY ISSUES
    (Middlesex UK: Patrick Gill, 2002)
    Joyet, Alain 
    ;
    Mileti, Gaetano 
    ;
    Thomann, Pierre 
    ;
    Dudle, G.
    We describe a primary fountain frequency standard operating with a continuous beam of laser-cooled Cs atoms. In such a device, aliasing effects, which may degrade the short-term stability in pulsed fountains, are removed and atomic-noise limited stability can be achieved with a state-of-the art, but commercially available, local oscillator. The present experimental short-term stability is measured to be 2.5 · 10-13τ-1/2. Another feature of the continuous fountain is the reduced atomic density and higher beam temperature which reduces the collisional shift of the atomic frequency below the 10-15 level. The light-shift is an undesirable characteristic of the continuous operation. Without a light-trap, a light-shift of the order of 10-12 has been measured. The shift is stable enough not to affect the frequency stability to 104 seconds (2.5 · 10-15). A rotating light-trap has been constructed and tested to bring the light-shift and the corresponding uncertainty to a negligible level. Various contributions to the accuracy are studied.