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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 1422–1428

Fabrication of two-dimensional Ta2O5 photonic crystal slabs with ultra-low background emission toward highly sensitive fluorescence spectroscopy

Takahiro Kaji, Toshiki Yamada, Rieko Ueda, Xingsheng Xu, and Akira Otomo  »View Author Affiliations

Optics Express, Vol. 19, Issue 2, pp. 1422-1428 (2011)

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A two-dimensional tantalum pentoxide (Ta2O5) photonic crystal (PC) slab with low-background emission was fabricated and a 12-fold enhancement of fluorescence from the organic dyes of perylene diimide adsorbed on the surface of the PCs was observed. The background emissions of the Ta2O5 substrates with and without the PCs after thermal annealing at 600°C with oxygen gas were comparable to that of a well-cleaned cover glass. This is to date the lowest level of background emissions of two-dimensional PCs using materials with a high refractive index (>2). The results reported here provide new insights into the fabrication of the photonic devices that enable highly sensitive fluorescence microscopy or optical detections.

© 2011 OSA

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(160.4890) Materials : Organic materials
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(180.2520) Microscopy : Fluorescence microscopy
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: November 18, 2010
Revised Manuscript: December 22, 2010
Manuscript Accepted: January 2, 2011
Published: January 12, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Takahiro Kaji, Toshiki Yamada, Rieko Ueda, Xingsheng Xu, and Akira Otomo, "Fabrication of two-dimensional Ta2O5 photonic crystal slabs with ultra-low background emission toward highly sensitive fluorescence spectroscopy," Opt. Express 19, 1422-1428 (2011)

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