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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 14547–14552

Investigation of polarized light emitting diodes with integrated wire grid polarizer

Örs Sepsi, István Szanda, and Pál Koppa  »View Author Affiliations


Optics Express, Vol. 18, Issue 14, pp. 14547-14552 (2010)
http://dx.doi.org/10.1364/OE.18.014547


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Abstract

The polarization properties of light emitting diodes with integrated wire grid polarizers are investigated. Rigorous coupled wave analysis and Monte-Carlo ray tracing are used for modeling the gratings and the entire LED structure respectively. We show that it is more advantageous to place the polarizer onto the LED encapsulation rather than onto the die. With the proposed arrangement the average extinction ratio is 2.37 in the uncollimated case and 76.86 in the collimated case, while the light extraction efficiency is significantly higher than that of the LED + external polarizer combination. The achieved results compare favorably to other polarized LED solutions proposed in the literature.

© 2010 OSA

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(230.3670) Optical devices : Light-emitting diodes
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optical Devices

History
Original Manuscript: April 2, 2010
Revised Manuscript: May 21, 2010
Manuscript Accepted: June 5, 2010
Published: June 23, 2010

Citation
Örs Sepsi, István Szanda, and Pál Koppa, "Investigation of polarized light emitting diodes with integrated wire grid polarizer," Opt. Express 18, 14547-14552 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-14-14547


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