Observation of narrow fluorescence from doubly driven four-level atoms at room temperature

Abstract

Unusually narrow fluorescence peaks are seen from Rubidium-85 atoms under the action of two driving laser fields that are in a three dimensional molasses configuration. One of the lasers is held at a fixed detuning from the "cooling" transition, while the other is scanned across the "repumping" transitions. The fluorescence peaks are split into symmetric pairs, with the seperation within a pair increasing with the detuning of the cooling laser. For large detunings additional small peaks are seen. A simple model is proposed to explain these experimental observations.

8 pages, 4 figures, needs epl.cls

References in corpus (4)

• Interacting Dark Resonances: Interference Effects Induced by Coherently Altered Quantum Superpositions
• Nonlinear optics via double dark resonances
• Observations of a doubly driven V system probed to a fourth level in laser-cooled rubidium
• Precise measurement of hyperfine intervals using avoided crossing of dressed states