Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Tabosa, J. W. R."'
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
Akademický článek
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Publikováno v:
Optics Express, 24, 9, (2016)
We report on the amplification of an optical vortex beam carrying orbital angular momentum via induced narrow Raman gain in an ensemble of cold cesium atoms. A 20\% single-pass Raman gain of a weak vortex signal field is observed with a spectral widt
Externí odkaz:
http://arxiv.org/abs/1605.01764
Autor:
de Almeida, A. J. F., Barreiro, S., Martins, W. S., Felinto, R. A. de Oliveira D., Pruvost, L., Tabosa, J. W. R.
Publikováno v:
Opt. Lett. 40(11), 2545-2548 (2015)
We report on the storage of Orbital Angular Momentum (OAM) of light via the phenomenon of Coherent Population Oscillation (CPO) in cold cesium atoms. The experiment is performed using a delayed four wave mixing configuration where the transverse opti
Externí odkaz:
http://arxiv.org/abs/1505.06618
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
Autor:
de Oliveira, R. A., Pruvost, L., Barbosa, P. S., Martins, W. S., Barreiro, S., Felinto, D., Bloch, D., Tabosa, J. W. R.
We report on the storage of orbital angu- lar momentum (OAM) of light of a Laguerre-Gaussian mode in an ensemble of cold cesium atoms and its re- trieval along an axis different from the incident light beam. We employed a time-delayed four-wave mixin
Externí odkaz:
http://arxiv.org/abs/1409.5690
Autor:
Florez, H. M., Cruz, L. S., de Miranda, M. H. G., de Oliveira, R. A., Tabosa, J. W. R., Martinelli, M., Felinto, D.
We report a detailed investigation on the properties of correlation spectra for cold atoms under the condition of Electromagnetically Induced Transparency (EIT). We describe the transition in the system from correlation to anti-correlation as the int
Externí odkaz:
http://arxiv.org/abs/1308.0849
We report on the observation of enhanced four-wave mixing via crossover resonance in a Doppler broadened cesium vapor. Using a single laser frequency, a resonant parametric process in a double-$\Lambda$ level configuration is directly excited for a s
Externí odkaz:
http://arxiv.org/abs/1107.5768
Publikováno v:
Optics Letters, Vol. 35, Issue 23, pp. 3937-3939 (2010)
We report on the simultaneous observation, by delayed Bragg diffraction, of four- and six-wave mixing processes in a coherently prepared atomic ensemble consisting of cold cesium atoms. For each diffracted order, we observe different temporal pulse s
Externí odkaz:
http://arxiv.org/abs/1012.1487
Publikováno v:
Published online on European Physical Journal D (2010)
We report a detailed investigation on the generation of pulse pairs during the readout of a coherence grating stored in a cold atomic ensemble. The pulse shapes and the split of the retrieved energy between the two pulses are studied as a function of
Externí odkaz:
http://arxiv.org/abs/1008.0610