Related Experiment Video
Updated: Jun 19, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Narrow resonances observed with nearly degenerate light in an open two-level system
Abstract:
We report the observation of narrow resonances in the optical region by using the method of separated oscillatory fields in an atomic beam. Because of optical pumping, two nearly degenerate optical fields create a time-dependent modulation of the ground-state population, which interferes with the optical fields in a second region, resulting in a fringe pattern. The width and shape of the observed fringes are the same as those observed with the usual Ramsey method, although no coherence between the two levels under investigation is needed.
Related Concept Videos
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Resonance and Hybrid Structures
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Sound Waves: Resonance
The de Broglie Wavelength
UV–Vis Spectroscopy: Molecular Electronic Transitions

