Modification of spontaneous emission lifetimes in the presence of corrugated metallic surfaces

Autor:	William L. Barnes, R. M. Amos
Rok vydání:	1999
Předmět:	Wavelength Planar Materials science Amplitude Surface plasmon Quasiparticle Physics::Optics Spontaneous emission Atomic physics Surface plasmon polariton Ion
Zdroj:	Physical Review B. 59:7708-7714
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.59.7708
Popis:	We report the results of measurements of the spontaneous emission lifetime of a ${\mathrm{Eu}}^{3+}$ complex in the presence of a nearby metal surface. The excited-state lifetime of the ions are measured as a function of their separation from both planar and periodically corrugated metallic surfaces. Several corrugated silver surfaces were used, each having a different combination of pitch and amplitude. No significant difference is found between data obtained for ions situated above a planar silver surface and those above corrugated surfaces that have pitches greater than the emission wavelength. However, for surfaces with a pitch less than the emission wavelength, differences are seen, and are shown to increase with increasing corrugation amplitude. Possible explanations for the observed differences are given, including a discussion of the role of surface plasmon polariton modes on corrugated metallic surfaces.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f84100a83eb2d49ace342551419aef8f https://doi.org/10.1103/physrevb.59.7708 Zobrazit plný text záznamu