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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Spontaneous one-dimensional optical-bandgap formation in suspensions of dielectric particles

Robb, G R M and McNeil, B W J (2003) Spontaneous one-dimensional optical-bandgap formation in suspensions of dielectric particles. EPL: A Letters Journal Exploring the Frontiers of Physics, 62 (2). pp. 217-222. ISSN 0295-5075

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Abstract

It is shown that under certain conditions a collection of dielectric Rayleigh particles suspended in a viscous medium and enclosed in a high-Q bidirectional ring cavity pumped by a strong laser field can spontaneously self-organise to produce a one-dimensional optical bandgap. Using a linear stability analysis, a dispersion relation is derived which determines the region of parameter space in which the region of spontaneous bandgap formation occurs. A numerical analysis is carried out to observe the dynamics of the interaction in the nonlinear regime. In the nonlinear regime, depletion of the pump field due to the formation of the bandgap is almost 100%. An important feature of the optical bandgap described here is its inherent tunability.