Surface Plasmonics and Its Applications in Infrared Sensing
( Nanoplasmonics - Fundamentals and Applications )
Publication series ： Nanoplasmonics - Fundamentals and Applications
Author： Guiru Gu Xuejun Lu Thitikorn Kemsri and Yingjie Zhang
Publisher： IntechOpen
Publication year： 2017
E-ISBN: INT6515067410
P-ISBN(Paperback): 9789535132776
P-ISBN(Hardback): 9789535132783
Subject： O469 Condensed Matter Physics
Keyword： 凝聚态物理学
Language： ENG
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Surface Plasmonics and Its Applications in Infrared Sensing
Description
Surface plasmonic waves have been extensively researched due to their strong surface confinement. The strong surface confinement allows high absorption in an infrared (IR) detector with a thin active absorption region. The excitation of surface plasmonic resonance (SPR) depends on the metallic structures and the interface materials. This enables engineering of plasmonic-enhanced IR detector properties (e.g. detection wavelength, polarization and angular dependence) by properly designing the plasmonic structures. This chapter first gives a brief review of the surface plasmonic waves, followed by the description of SPR excitation in a metallic two-dimensional (2D) sub-wavelength hole array (2DSHA) structure. The applications of the 2DSHA SPR in IR detector enhancement are then presented with a discussion of the polarization and angular dependence.
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