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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 19 — Oct. 1, 2007
  • pp: 2825–2827

Enhanced optical absorption for photovoltaics via excitation of waveguide and plasmon-polariton modes

Nicolae C. Panoiu and Richard M. Osgood, Jr.  »View Author Affiliations


Optics Letters, Vol. 32, Issue 19, pp. 2825-2827 (2007)
http://dx.doi.org/10.1364/OL.32.002825


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Abstract

We study theoretically the mechanisms by which optical absorption is enhanced in an optical nanostructure consisting of a slab waveguide, made of a- Si : H , sandwiched between a periodic array of metallic nanowires and a substrate, both made of Au. We demonstrate that for the TM polarization the optical absorption in the slab waveguide can be enhanced by almost an order of magnitude by the excitation of plasmon modes, whereas for both the TM and TE polarizations the grating-induced excitation of slab waveguide modes leads to more than twofold enhancement of the optical absorption.

© 2007 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(130.2790) Integrated optics : Guided waves
(230.7400) Optical devices : Waveguides, slab
(240.6680) Optics at surfaces : Surface plasmons
(310.2790) Thin films : Guided waves

ToC Category:
Integrated Optics

History
Original Manuscript: July 2, 2007
Revised Manuscript: August 23, 2007
Manuscript Accepted: August 29, 2007
Published: September 25, 2007

Citation
Nicolae C. Panoiu and Richard M. Osgood, Jr., "Enhanced optical absorption for photovoltaics via excitation of waveguide and plasmon-polariton modes," Opt. Lett. 32, 2825-2827 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-19-2825


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