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Proceedings Paper

Direct measurement of spectrally selective absorption enhancement in Fano resonance photonic crystal cavities on plastic substrates
Author(s): Li Chen; Hongjun Yang; Zexuan Qiang; Lei Sun; Zhenqiang Ma; Jian Xu; Ryan Pate; Adrienne Stiff-Roberts; Gail J. Brown; Weidong Zhou
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Paper Abstract

We report direct measurement of spectrally selective absorption properties of PbSe and PbS colloidal quantum dots (CQDs) in Si nanomembrane photonic crystal cavities on flexible polyethylene terephthalate (PET) substrates. Enhanced optical absorption was obtained when CQD absorption overlaps with photonic crystal Fano resonances. On the other hand, no absorption was observed when the Fano resonance has no spectral overlap with the CQD absorption bands. The measurement results agree well with the simulation results obtained based on 3D FDTD and RCWA simulation techniques. Measured angular and polarization properties also agree well with Fano resonance transmission properties, which were obtained experimentally and, theoretically based on simulated dispersion properties and transmission properties. Bending induced spectral shifts were characterized for potentially flexible photonic device applications.

Paper Details

Date Published: 23 February 2010
PDF: 8 pages
Proc. SPIE 7609, Photonic and Phononic Crystal Materials and Devices X, 76090E (23 February 2010); doi: 10.1117/12.841440
Show Author Affiliations
Li Chen, The Univ. of Texas at Arlington (United States)
Hongjun Yang, The Univ. of Texas at Arlington (United States)
Zexuan Qiang, The Univ. of Texas at Arlington (United States)
Lei Sun, Univ. of Wisconsin-Madison (United States)
Zhenqiang Ma, Univ. of Wisconsin-Madison (United States)
Jian Xu, The Pennsylvania State Univ. (United States)
Ryan Pate, Duke Univ. (United States)
Adrienne Stiff-Roberts, Duke Univ. (United States)
Gail J. Brown, Air Force Research Lab. (United States)
Weidong Zhou, The Univ. of Texas at Arlington (United States)


Published in SPIE Proceedings Vol. 7609:
Photonic and Phononic Crystal Materials and Devices X
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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