269 citations · 627 across the 7 of their papers we have counts for
7 papers
Near-resonant light scattering by an atom in a state-dependent trap
Teresa D. Karanikolaou, Robert J. Bettles, Darrick E. Chang
The optical properties of a fixed atom are well-known and investigated. For example, the extraordinarily large cross section of a single atom as seen by a resonant photon is essent…
Quantum and Nonlinear Effects in Light Transmitted through Planar Atomic Arrays
Robert J. Bettles, Mark D. Lee, Simon A. Gardiner +1
We identify significant quantum many-body effects, robust to position fluctuations and strong dipole--dipole interactions, in the forward light scattering from planar arrays and un…
Collective Mode Interferences in Light--Matter Interactions
Robert J. Bettles, Teodora Ilieva, Hannes Busche +4
We present a theoretical and experimental analysis of transient optical properties of a dense cold atomic gas. After the rapid extinction of a weak coherent driving field (mean pho…
Cooperative eigenmodes and scattering in 1D atomic arrays
R. J. Bettles, S. A. Gardiner, C. S. Adams
Collective coupling between dipoles can dramatically modify the optical response of a medium. Such effects depend strongly on the geometry of the medium and the polarization of the…
Enhanced optical cross section via collective coupling of atomic dipoles in a 2D array
Robert J. Bettles, Simon A. Gardiner, Charles S. Adams
Enhancing the optical cross section is an enticing goal in light-matter interactions, due to its fundamental role in quantum and non-linear optics. Here, we show how dipolar intera…
Cooperative Ordering in Lattices of Interacting Two-Level Dipoles
Robert J. Bettles, Simon A. Gardiner, Charles S. Adams
We investigate the cooperative behavior of regular monolayers of driven two-level dipoles, using classical electrodynamics simulations. The dipolar response results from the interf…
Absolute absorption on rubidium D1 line: including resonant dipole-dipole interactions
Lee Weller, Robert J Bettles, Paul Siddons +2
Here we report on measurements of the absolute absorption spectra of dense rubidium vapour on the D1 line in the weak-probe regime for temperatures up to 170 C and number densities…