
Proceedings Paper
Engineering optical properties of semiconductor metafilm superabsorbersFormat | Member Price | Non-Member Price |
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Paper Abstract
Light absorption in ultrathin layer of semiconductor has been considerable interests for many years due to its potential
applications in various optical devices. In particular, there have been great efforts to engineer the optical properties of
the film for the control of absorption spectrums. Whereas the isotropic thin films have intrinsic optical properties that are
fixed by materials’ properties, metafilm that are composed by deep subwavelength nano-building blocks provides
significant flexibilities in controlling the optical properties of the designed effective layers. Here, we present the ultrathin
semiconductor metafilm absorbers by arranging germanium (Ge) nanobeams in deep subwavelength scale. Resonant
properties of high index semiconductor nanobeams play a key role in designing effective optical properties of the film.
We demonstrate this in theory and experimental measurements to build a designing rule of efficient, controllable
metafilm absorbers. The proposed strategy of engineering optical properties could open up wide range of applications
from ultrathin photodetection and solar energy harvesting to the diverse flexible optoelectronics.
Paper Details
Date Published: 18 April 2016
PDF: 6 pages
Proc. SPIE 9883, Metamaterials X, 98830Y (18 April 2016); doi: 10.1117/12.2231164
Published in SPIE Proceedings Vol. 9883:
Metamaterials X
Allan D. Boardman; Nigel P. Johnson; Kevin F. MacDonald; Ekmel Özbay, Editor(s)
PDF: 6 pages
Proc. SPIE 9883, Metamaterials X, 98830Y (18 April 2016); doi: 10.1117/12.2231164
Show Author Affiliations
Soo Jin Kim, Stanford Univ. (United States)
Pengyu Fan, Stanford Univ. (United States)
Pengyu Fan, Stanford Univ. (United States)
Published in SPIE Proceedings Vol. 9883:
Metamaterials X
Allan D. Boardman; Nigel P. Johnson; Kevin F. MacDonald; Ekmel Özbay, Editor(s)
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