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European Quantum Electronics Conference (EQEC)

Stopping of light due to spatial dispersion

Ch. Helm, Ivo Kaelin, G. Blatter, Lev N. Bulaevskii

Published Nov 15, 2004• 0 citations
Publisher

Abstract

Spatial dispersion is taken into account and significant effects for the reflectivity, applications for beam splitting and a novel method to stop of light and to store optical qubits are discussed in the paper.
DOI
10.1109/eqec.2003.1314274

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Moving refractive index fronts in waveguides with dispersion is a special type of spatio-temporal modulation leading to the change of signal frequency and wavenumber. The interaction of light with such fronts allows frequency conversion, light stopping, optical delays as well as bandwidth and pulse duration manipulation. We will present theoretical and experimental examples of signal transmission, reflection and trapping by the front and highlight special situations such as light stopping, time reversal or optical push broom effect. We will geometrically consider indirect transitions in the dispersion relation using the phase continuity relation at the front and present numerical solutions of the linear Schrödinger equation which follows from the slowly varying envelope approximation of the wave equation. In particular, for highly dispersive waveguides a temporal evolution of the spatial wave envelopes are considered in contrast to conventional spatial evolution of temporal envelopes. Further, we will present an overview of experimental results and estimate the maximal achievable effects for each of the application in different waveguide systems.