OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 20 — Oct. 15, 2013
  • pp: 4200–4203

Light trapping and near-unity solar absorption in a three-dimensional photonic-crystal

Ping Kuang, Alexei Deinega, Mei-Li Hsieh, Sajeev John, and Shawn-Yu Lin  »View Author Affiliations


Optics Letters, Vol. 38, Issue 20, pp. 4200-4203 (2013)
http://dx.doi.org/10.1364/OL.38.004200


View Full Text Article

Enhanced HTML    Acrobat PDF (1724 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We report what is to our knowledge the first observation of the effect of parallel-to-interface-refraction (PIR) in a three-dimensional, simple-cubic photonic-crystal. PIR is an acutely negative refraction of light inside a photonic-crystal, leading to light-bending by nearly 90 deg over broad wavelengths (λ). The consequence is a longer path length of light in the medium and an improved light absorption beyond the Lambertian limit. As an illustration of the effect, we show near-unity total absorption (98%) in λ=520620nm and an average absorption of 94% over λ=400700nm for our α-Si:H photonic-crystal sample of an equivalent bulk thickness of t˜=450nm. Furthermore, we have achieved an ultra-wide angular acceptance of light over θ=0°80°. This demonstration opens up a new door for light trapping and near-unity solar absorption over broad λs and wide angles.

© 2013 Optical Society of America

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Diffraction and Gratings

History
Original Manuscript: July 25, 2013
Manuscript Accepted: September 2, 2013
Published: October 14, 2013

Citation
Ping Kuang, Alexei Deinega, Mei-Li Hsieh, Sajeev John, and Shawn-Yu Lin, "Light trapping and near-unity solar absorption in a three-dimensional photonic-crystal," Opt. Lett. 38, 4200-4203 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-20-4200

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited