Polarized light emission from photonic crystal light-emitting diodes

Chun Feng Lai*, Jim Yong Chi, Hsi Hsuan Yen, Hao-Chung Kuo, Chia Hsin Chao, Han Tsung Hsueh, Jih Fu Trevor Wang, Chen Yang Huang, Wen Yung Yeh

*Corresponding author for this work

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Abstract

We have experimentally studied polarization characteristics of the two-dimensional photonic crystal (PhC) light-emitting diodes (LEDs) using an annular structure with square lattice and observed a strong polarization dependence of the lattice constant and orientation of the PhC. The extracted light from the GaN PhC LEDs has PS ratios of 5.5 (∼85% polarization light) for light propagating in the ΓX direction and 2.1 (∼68% polarization light) for the ΓM direction, respectively. Based on the couple mode theory, the dependence of polarization behaviors on different lattice constant and orientation was found to be in good agreement with theoretical discussion.

Original languageEnglish
Article number243118
JournalApplied Physics Letters
Volume92
Issue number24
DOIs
StatePublished - 30 Jun 2008

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    Lai, C. F., Chi, J. Y., Yen, H. H., Kuo, H-C., Chao, C. H., Hsueh, H. T., Wang, J. F. T., Huang, C. Y., & Yeh, W. Y. (2008). Polarized light emission from photonic crystal light-emitting diodes. Applied Physics Letters, 92(24), [243118]. https://doi.org/10.1063/1.2938885