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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 2103–2105

Total absorption of TM polarized light in a 100 nm spectral band in a nanopatterned thin a-Si film

Wenhua Wu and Robert Magnusson  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 2103-2105 (2012)
http://dx.doi.org/10.1364/OL.37.002103


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Abstract

We report a leaky-mode resonant absorber fashioned as one-dimensional nanopatterned ultra-thin films. This simple structure exhibits optical absorbance of 66% in the 300–750 nm wavelength band, which is an 60% increase relative to a comparable planar reference structure. The transverse-magnetic (TM) polarized light in the 460560nm band is nearly totally absorbed. Applying a backside metal reflector raises the absorbance farther to 73%.

© 2012 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(050.1950) Diffraction and gratings : Diffraction gratings
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

History
Original Manuscript: November 23, 2011
Manuscript Accepted: April 10, 2012
Published: June 1, 2012

Citation
Wenhua Wu and Robert Magnusson, "Total absorption of TM polarized light in a 100 nm spectral band in a nanopatterned thin a-Si film," Opt. Lett. 37, 2103-2105 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-2103

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