We report an experimental study of an all-optical three-photon-absorption resonance (known as an 'N resonance') and discuss its potential application as an alternative to atomic clocks based on ...coherent population trapping. We present measurements of the N-resonance contrast, width and light shift for the D{sub 1} line of {sup 87}Rb with varying buffer gases, and find good agreement with an analytical model of this resonance. The results suggest that N resonances are promising for atomic clock applications.
We present a joint theoretical and experimental characterization of the coherent population trapping (CPT) resonance excited on the D{sub 1} line of {sup 87}Rb atoms by bichromatic linearly polarized ...laser light. We observe high-contrast transmission resonances (up to approx =25%), which makes this excitation scheme promising for miniature all-optical atomic clock applications. We also demonstrate cancellation of the first-order light shift by proper choice of the frequencies and relative intensities of the two laser-field components. Our theoretical predictions are in good agreement with the experimental results.
We present a joint theoretical and experimental characterization of the coherent population trapping (CPT) resonance excited on the D1 line of 87Rb atoms by bichromatic linearly polarized laser ...light. We observe high-contrast transmission resonances (up to 25%), which makes this excitation scheme promising for miniature all-optical atomic clock applications. We also demonstrate cancellation of the first-order light shift by proper choice of the frequencies and relative intensities of the two laser field components. Our theoretical predictions are in good agreement with the experimental results.
MOSCOW, April 13 (Itar-Tass) - The Organization for Security and Cooperation in Europe (OSCE) should remain the centre of developing architecture of European security, Russia's Foreign Minister Igor ...Ivanov said on Thursday. "No need to say what great importance we attach to the OSCE in the life of Europe," Ivanov said opening talks with his Austrian counterpart Benita Maria Ferrero-Waldner, current OSCE chairperson.
MOSCOW, April 13 (Itar-Tass) - Russian Foreign Minister Igor Ivanov and his Austrian counterpart Benita Ferrero-Waldner signed on Thursday an intergovernmental convention on avoiding double taxation, ...with regard to income and capital taxes.
published in JETP Letters v.82, 477(2005) The measurements of the metrological characteristics (amplitude, width, and
shift in the magnetic field) of the dark pseudoresonance, which was proposed by
...Kazakov et al. quant-ph/0506167 as the reference resonance for an atomic
frequency standard, are reported. It has been shown that the characteristics of
the pseudoresonance are worse than those of the unsplit electromagnetically
induced transparency resonance for the excitation scheme with the lin||lin
polarization on the D1 line of the 87Rb atom.
We propose a simple and effective way of creating pure dark superposition
states. The generation of pure states is carried out by using bichromatic
radiation with controllable polarization ...ellipticity. We derived analytic
formulas for polarization elipticity to obtain pure dark states of different
Zeeman sublevels of alkali atoms. Experimentally we accumulated ~60% of the
atoms in the 0-0 dark state of the D1 line of Rb87
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