Spectral dependence of diffuse light dynamics in ultracold atomic 85Rb
| Autor: | Igor M. Sokolov, Charles I. Sukenik, R.G. Olave, Salim Balik, Mark D. Havey, D. V. Kupriyanov, V. M. Datsyuk |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Quantum Physics Atomic Physics (physics.atom-ph) Monte Carlo method Resonance FOS: Physical sciences 01 natural sciences Atomic and Molecular Physics and Optics Light scattering 010305 fluids & plasmas Physics - Atomic Physics symbols.namesake Fourier transform Ultracold atom 0103 physical sciences symbols Rayleigh scattering Exponential decay Atomic physics 010306 general physics Quantum Physics (quant-ph) Excitation Optics (physics.optics) Physics - Optics |
| Popis: | We report a combined experimental and theoretical simulation of multiply scattered light dynamics in an ultracold gas of 85Rb atoms. Measurements of the spectral dependence of the time-decay of the scattered light intensity, following pulsed excitation with near resonance radiation, reveals that the decay for long times is nearly exponential, with a decay constant that is largely independent of detuning from resonance. Monte Carlo simulations of the multiple scattering process show that, for large detunings, near resonance scattering of Fourier components of the excitation pulse plays a significant role in the effect. This interpretation is supported by the observations, and successful modelling, of beating between Rayleigh scattered light at the excitation carrier frequency with the Fourier components of the excitation pulse that overlap significantly with the atomic resonance. |
| Databáze: | OpenAIRE |
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