Optical control and switching of excitation transfer in nano-arrays

Bradshaw, D.S. and Andrews, D. L. (2008) Optical control and switching of excitation transfer in nano-arrays. In: Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications. Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE), VII (6875). UNSPECIFIED. ISBN 9780819470508

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Abstract

The possibility of influencing resonance energy transfer through the input of off-resonant pulses of laser radiation is the subject of recent research. Attention is now focused on systems in which resonance energy transfer is designedly precluded by geometric configuration. Here, through an optically nonlinear mechanism - optically controlled resonance energy transfer - the throughput of non-resonant pulses can facilitate energy transfer that is, in their absence, completely forbidden. The system thus functions as an optical buffer, with excitation throughput switched on by the secondary beam. For applications, a system based on two parallel nano-arrays is envisaged. This paper will establish and discuss the principles - those that can be exploited to enhance switching characteristics and efficiency, and others (such as off-axis excitation transfer) that may represent cross-talk limitations. Principles to be explored in detail are the interplay between geometric features, including the array architecture and repeat distance (lattice constant), the array spacing and translational symmetry, the orientations of the transition dipoles, and the magnitude of the relevant components of the nonlinear response tensors. The aim is, through a determination of key parameters, to inform a program of optimization that can deliver specific criteria for realizing the most efficient systems for implementation.

Item Type: Book Section
Faculty \ School:
Faculty of Science > School of Chemistry
Related URLs:
Depositing User: Users 2731 not found.
Date Deposited: 19 Mar 2012 11:31
Last Modified: 25 Jul 2019 03:04
URI: https://ueaeprints.uea.ac.uk/id/eprint/38316
DOI: 10.1117/12.764448

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