Abstract
We address the issue of extracting light from a waveguide towards air in a compact way for randomly oriented guided waves. The goal is to enhance the extraction efficiency of light-emitting diodes while retaining planar processing. For incidence-angle-independent extraction, preferred lattice designs appear to possess a ring-shaped Fourier transform. We demonstrate this property for an Archimedean lattice. This system is the outer part of a resonant-cavity light-emitting diode. Data suggest that similar to40% extraction efficiency is at hand in a planar top-emitting device retaining its substrate. (C) 2003 American Institute of Physics.
Original language | English |
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Pages (from-to) | 1283-1285 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 83 |
Issue number | 7 |
DOIs | |
Publication status | Published - 18 Aug 2003 |
Keywords
- CRYSTAL MICROCAVITIES
- EMITTING-DIODES
- EFFICIENCY
- BANDGAPS
- SLABS