Zobrazeno 1 - 10
of 861
pro vyhledávání: '"Bretenaker, 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:
Gredat, G., Chatterjee, D., Baili, G., Gutty, F., Goldfarb, I. Sagnes F., Bretenaker, F., Liu, H.
Publikováno v:
Optics Express 26, 26217-26226 (2018)
We report a fully-correlated multi-mode pumping architecture optimized for dramatic noise reduction of a class-A dual-frequency Vertical External Cavity Surface Emitting Laser (VECSEL). Thanks to amplitude division of a laser diode, the two orthogona
Externí odkaz:
http://arxiv.org/abs/1812.03681
We build a resonant fiber optic gyro based on Kagome hollow-core fiber. A semi-bulk cavity architecture based on a 18-m-long Kagome fiber permits to achieve a cavity finesse of 23 with a resonance linewidth of 700 kHz. An optimized Pound-Drever-Hall
Externí odkaz:
http://arxiv.org/abs/1812.04694
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