Investigation of polarized light emitting diodes with integrated wire grid polarizer

Örs Sepsi, István Szanda, Pál Koppa

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)14547-14552
Number of pages6
JournalOptics Express
Volume18
Issue number14
DOIs
Publication statusPublished - Jul 5 2010

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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