Localized radiative energy transfer from a plasmonic bow-tie nano-antenna to a magnetic thin film stack
Şendur, Kürşat and Koşar, Ali and Mengüç, M. P. (2011) Localized radiative energy transfer from a plasmonic bow-tie nano-antenna to a magnetic thin film stack. Applied Physics A - Materials Science & Processing, 103 (3). pp. 703-707. ISSN 0947-8396 (Print) 1432-0630 (Online)
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Official URL: http://dx.doi.org/10.1007/s00339-010-6204-0
Localized radiative energy transfer from a near-field emitter to a magnetic thin film structure is investigated. A magnetic thin film stack is placed in the near-field of the plasmonic nano-antenna to utilize the evanescent mode coupling between the nano-antenna and magnetic thin film stack. A bow-tie nano-optical antenna is excited with a tightly focused beam of light to improve near-field radiative energy transfer from the antenna to the magnetic thin film structure. A tightly focused incident optical beam with a wide angular spectrum is formulated using Richards-Wolf vector field equations. Radiative energy transfer is investigated using a frequency domain 3D finite element method solution of Maxwell's equations. Localized radiative energy transfer between the near-field emitter and the magnetic thin film structure is quantified for a given optical laser power at various distances between the near-field emitter and magnetic thin film.
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