Laser conferral of a directed character to near-field energy transfer

D.S. Bradshaw, D. L. Andrews

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


With sufficient intensity, an off-resonant laser beam can modify the character of electromagnetic near-field radiation produced by a nanoscale point source, narrowing its spatial distribution. The mechanism, for which the laser frequency is significantly off-resonant from the emission radiation, is detailed and analyzed through a quantum electrodynamical analysis. Results are calculated for various positions of a polarization-sensitive probe relative to the point source, sited within the throughput beam, and contour maps exhibit variations in the registered signal over a range of input intensities. A key feature is the clear exhibition of directed propagation features, usually emergent only in the wave zone, within the near-field region of the source. © 2009 Pleiades Publishing, Ltd.
Original languageEnglish
Pages (from-to)125-128
Number of pages4
JournalLaser Physics
Issue number1
Publication statusPublished - 6 Aug 2009

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