Physics – Quantum Physics
Scientific paper
2008-12-05
Phys. Rev. A 79, 033414 (2009)
Physics
Quantum Physics
7 pages, 6 figures
Scientific paper
10.1103/PhysRevA.79.033414
We use an optically dense, anisotropic magneto-optical trap to study recoil-induced resonances (RIRs) in the transient, high-gain regime. We find that two distinct mechanisms govern the atomic dynamics: the finite, frequency-dependent atomic response time, and momentum-space population redistribution. At low input probe intensities, the residual Doppler width of the atoms, combined with the finite atomic response time, result in a linear, transient hysteretic effect that modifies the locations, widths, and magnitudes of the resulting gain spectra depending on the sign of the scan chirp. When larger intensities (\textit{i.e.}, greater than a few $\mu$W/cm$^2$) are incident on the atomic sample for several $\mu$s, hole-burning in the atomic sample's momentum distribution leads to a coherent population redistribution that persists for approximately 100 $\mu$s. We propose using RIRs to engineer the atomic momentum distribution to enhance the nonlinear atom-photon coupling. We present a numerical model, and compare the calculated and experimental results to verify our interpretation.
Gauthier Daniel J.
Greenberg Joel A.
No associations
LandOfFree
Transient dynamics and momentum redistribution in cold atoms via recoil-induced resonances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Transient dynamics and momentum redistribution in cold atoms via recoil-induced resonances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transient dynamics and momentum redistribution in cold atoms via recoil-induced resonances will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-366161