Pencirian Plasmon-Polariton Permukaan Melalui Gandingan Parutan

Mat Yunus, W. Mahmood (1996) Pencirian Plasmon-Polariton Permukaan Melalui Gandingan Parutan. Pertanika Journal of Science & Technology, 4 (2). pp. 221-230. ISSN 0128-7680

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Abstract

Surface plasmon polariton mode may be excited by photons using grating coupling to provide the necessary extra momentum. Reflectivity measurements at 632.8 nm were carried out on three modulated grating gold films. The gold films were deposited by vacuum evaporation on a silica grating at base pressure for 1O-6 torr. By rotating the grating in azimuth angle direction, where the grooves of the grating are no longer perpendicular to the plane of incidence, the symmetry of the system is broken and polarization conversion phenomenon is introduced. This conversion is strongly enhanced when SPP mode is excited. The dependence of this conversion on angle of incidence and azimuthal angle is discussed in detail. When the grooves are at about 45° to the plane of incidence, maximum conversion is observed.

Item Type:Article
Keyword:parutan, plasmon-polaritan permukaan, keterpantulan optik, pertukaran pengutupan
Faculty or Institute:Faculty of Environmental Studies
Publisher:Universiti Putra Malaysia Press
ID Code:3255
Deposited By: Nur Izzati Mohd Zaki
Deposited On:25 Nov 2009 01:17
Last Modified:27 May 2013 07:06

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