Zobrazeno 1 - 10
of 262
pro vyhledávání: '"Goldfarb F"'
We perform spin noise spectroscopy close to resonance in a 1-mm-thick cell containing a dense Rubidium vapor. A laser is used to excite optical dipoles in the vapor while probing the Faraday rotation noise. We report unusual lineshapes of the spin no
Externí odkaz:
http://arxiv.org/abs/2407.00184
We report anomalous features in the spin noise spectroscopy (SNS) of a thin cell of a dense vapor of alkali atoms. At high densities and close to resonance, we observe a dramatic broadening of the spin noise spectra as well as an unexpected extra low
Externí odkaz:
http://arxiv.org/abs/2407.00177
Publikováno v:
New Journal of Physics 25, 093055 (2023)
We theoretically and numerically investigate the spin fluctuations induced in a thermal atomic ensemble by an external fluctuating uniaxial magnetic field, in the context of a standard spin noise spectroscopy (SNS) experiment. We show that additional
Externí odkaz:
http://arxiv.org/abs/2309.02916
We perform spin noise spectroscopy experiments in metastable helium atoms at room temperature, with a probe light whose frequency is blue detuned from the D0 line. Both circular birefringence fluctuations (Faraday noise) and linear birefringence fluc
Externí odkaz:
http://arxiv.org/abs/2202.10896
Autor:
Crozatier V., Gorju G., Lavielle V., Louchet A., Bretenaker F., Chanelière T., Goldfarb F., Lorgeré I., Le Gouët J.-L.
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 3, p 08025 (2008)
This paper is devoted to optics in rare earth ion doped crystal at low temperature. In cryogenic conditions, interesting features come from absorption rather than from transparency. The optical transition linewidth is considerably reduced, which also
Externí odkaz:
https://doaj.org/article/2f6f525d853c4ccbb96eefbbe4c9dc4d
Autor:
de Almeida, A. J. F., Maynard, M. -A., Banerjee, C., Felinto, D., Goldfarb, F., Tabosa, J. W. R.
We report on the storage of light via the phenomenon of recoil-induced resonance in a pure two- level system of cold cesium atoms. We use a strong coupling beam and a weak probe beam to couple different external momentum states of the cesium atom via
Externí odkaz:
http://arxiv.org/abs/1612.04617
Autor:
Neveu, P., Maynard, M. -A., Bouchez, R., Lugani, J., Ghosh, R., Bretenaker, F., Goldfarb, F., Brion, E.
Publikováno v:
Phys. Rev. Lett. 118, 073605 (2017)
We theoretically study the propagation and storage of a classical field in a $\Lambda$-type atomic medium using coherent population oscillations (CPOs). We show that the propagation eigenmodes strongly relate to the different CPO modes of the system.
Externí odkaz:
http://arxiv.org/abs/1610.05557
Autor:
Lugani, J., Banerjee, C., Maynard, M-A., Neveu, P., Xie, W., Ghosh, R., Bretenaker, F., Goldfarb, F.
We report our experimental results on phase-sensitive amplification (PSA) in non-degenerate signal-idler configuration using ultra-narrow coherent population oscillations in metastable helium at room temperature. We achieved a high PSA gain of nearly
Externí odkaz:
http://arxiv.org/abs/1608.00907
Publikováno v:
Phys. Rev. A 92, 053803 (2015)
We report measurements of the time-dependent phases of the leak and retrieved pulses obtained in EIT storage experiments with metastable helium vapor at room temperature. In particular, we investigate the influence of the optical detuning at two-phot
Externí odkaz:
http://arxiv.org/abs/1507.05917
Autor:
de Almeida, A. J. F., Sales, J., Maynard, M. -A., Laupretre, T., Bretenaker, F., Felinto, D., Goldfarb, F., Tabosa, J. W. R.
We report on the storage of light via the phenomenon of Coherent Population Oscillation (CPO) in an atomic cesium vapor at room temperature. In the experiment the optical information of a probe field is stored in the CPO of two ground states of a Lam
Externí odkaz:
http://arxiv.org/abs/1409.5727