Resonance energy transfer and interface forces: quantum electrodynamical analysis

David S. Bradshaw; Jamie M. Leeder; Justo Rodríguez; David L. Andrews

doi:10.1117/12.770253

25 January 2008 Resonance energy transfer and interface forces: quantum electrodynamical analysis

David S. Bradshaw, Jamie M. Leeder, Justo Rodríguez, David L. Andrews

Proceedings Volume 6905, Complex Light and Optical Forces II; 690503 (2008) https://doi.org/10.1117/12.770253
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

On the propagation of radiation with a suitably resonant optical frequency through a dense chromophoric system - a doped solid for example - photon capture is commonly followed by one or more near-field transfers of the resulting optical excitation, usually to closely neighboring chromophores. Since the process results in a change to the local electronic environment, it can be expected to also shift the electromagnetic interactions between the participant optical units, producing modified inter-particle forces. Significantly, it emerges that energy transfer, when it occurs between chromophores or particles with electronically dissimilar properties (such as differing polarizabilities), engenders hitherto unreported changes in the local potential energy landscape. This paper reports the results of quantum electrodynamical calculations which cast a new light on the physical link between these features. The theory also elucidates a significant relationship with Casimir-Polder forces; it transpires that there are clear and fundamental links between dispersion forces and resonance energy transfer. Based on the results, we highlight specific effects that can be anticipated when laser light propagates through an interface between two absorbing media. Both steady-state and pulsed excitation conditions are modeled and the consequences for interface forces are subjected to detailed analysis.

Citation Download Citation

David S. Bradshaw, Jamie M. Leeder, Justo Rodríguez, and David L. Andrews "Resonance energy transfer and interface forces: quantum electrodynamical analysis", Proc. SPIE 6905, Complex Light and Optical Forces II, 690503 (25 January 2008); https://doi.org/10.1117/12.770253

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