Ray-leakage-free sawtooth-shaped planar lightguide solar concentrators

Hong Yu Wu, Shu Chun Chu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


This paper details the design of a ray-leakage-free sawtooth-shaped planar lightguide solar concentrator. The concentrator combines Unger's dimpled planar lightguide solar concentrators [1] with a prism array dimpled planar lightguide solar concentrator. The use of a sawtooth-shaped boundary on the planar lightguide prevents leakages of the guiding ray after multiple reflections in the lightguide. That is, the proposed solar concentrator can achieve a higher geometrical concentration ratio, while maintaining a high optical efficiency at the same time. Numerical results show that the proposed sawtooth-shaped planar lightguide solar concentrator achieves 2300x geometrical concentration ratio without any guiding ray-leakages from the planar lightguide.

Original languageEnglish
Pages (from-to)20073-20089
Number of pages17
JournalOptics Express
Issue number17
Publication statusPublished - 2013 Aug 26

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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