Non‐electromagnetically induced transparency mechanisms for slow light

Abstract

We show how the pump-induced sharp holes in homogeneously or inhomogeneously broadened absorption line shapes can be used for the production of ultra-slow light. We present a detailed discussion of underlying concepts and results on the pump power dependences of the group index and the bandwidth-delay product. Further, we discuss experimental results, which are in agreement with theoretical predictions.The variation of group index as function of the intensity of the pump field (S) at different probe detuning δ for an inhomogeneously broadened rare-earth doped crystal. 0

Slow wave phenomena in photonic crystals

“…This always involves some kind of a delicate resonant light-matter interaction with extremely small bandwidth. For instance, in the well known case of electromagnetically induced transparency [3][4][5][6][7][8][9][10], the incident light interacts with atomic spin excitations forming the so-called dark-state polaritons. These polaritons propagate slowly through the medium in the form of a sharply compressed pulse, the energy of which is much smaller than that of the incident light pulse.…”

Coherent population oscillation produced by saturating probe and pump fields on the intercombination line

“…Atomic coherence effects, induced by laser fields, such as the coherent population trapping (CPT) [1], the coherent population oscillation (CPO) [2], the electromagnetically induced transparency (EIT) [3], have become increasingly popular because of their very wide applications in lasing without inversion [4], enhancement of refractive index [5], slow light [6][7][8], storage of light [9,10], nanoscale resolution [11], magnetometry [12], etc. The interference resulting from multiple path ways produces a narrow dip in the absorption spectra which typically are used in applications.…”

Pump-probe optical response of an asymmetric double quantum dot molecule

“…We note that the subject of the interaction of a quantum (atomic) system simultaneously driven by a strong pump field and a weak probe field started by Mollow more than 40 years ago [36] and was extended by several others [37][38][39][40][41][42][43][44][45].…”