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Surface plasmons at single nanoholes in Au-films | | L. Yin
; V. K. Vlasko-Vlasov
; A. Rydh
; J. Pearson
; U. Welp
; S.-H. Chang
; S. K. Gray
; G. C. Schatz
; D. E. Brown
; C. W. Kimball
; | | Date: |
21 Dec 2003 | | Subject: | Materials Science | cond-mat.mtrl-sci | | Abstract: | The generation of surface plasmon polaritons (SPP’s) at isolated nanoholes in 100 nm thick Au films is studied using near-field scanning optical microscopy (NSOM). Finite-difference time-domain calculations, some explicitly including a model of the NSOM tip, are used to interpret the results. We find the holes act as point-like sources of SPP’s and demonstrate that interference between SPP’s and a directly transmitted wave allows for determination of the wavelength, phase, and decay length of the SPP. The near-field intensity patterns can be manipulated by varying the angle and polarization of the incident beam. | | Source: | arXiv, cond-mat/0401390 | | Services: | Forum | Review | PDF | Favorites | |
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