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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 24 — Nov. 24, 2008
  • pp: 20073–20080

Engineering stop gaps of inorganic-organic polymeric 3D woodpile photonic crystals with post-thermal treatment

Jiafang Li, Baohua Jia, and Min Gu  »View Author Affiliations

Optics Express, Vol. 16, Issue 24, pp. 20073-20080 (2008)

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A method is reported for improving the spatial resolution and engineering the stop gaps of the inorganic-organic 3D woodpile photonic crystals (PhCs). The approach is based on the two-photon polymerization (2PP) of an inorganic-organic hybrid material and a post-thermal treatment (PTT) process. The effects of PTT on polymerized 1D, 2D and 3D structures have been characterized. Ultimately, the feature size of the suspended rods has been reduced to ~33 nm and the spatial resolution of inorganic-organic 3D woodpile PhCs has been improved from ~150 nm to ~86 nm. The approach is also demonstrated as a powerful tool to engineer the stop gaps of 3D PhCs. In particular, a combination of PTT and the threshold fabrication technique leads to the stop gap of a 3D woodpile PhC that can be tuned over a large wavelength range of ~318 nm from the near-infrared to visible region.

© 2008 Optical Society of America

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(160.5470) Materials : Polymers
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: October 27, 2008
Revised Manuscript: November 13, 2008
Manuscript Accepted: November 14, 2008
Published: November 20, 2008

Jiafang Li, Baohua Jia, and Min Gu, "Engineering stop gaps of inorganic-organic polymeric 3D woodpile photonic crystals with post-thermal treatment," Opt. Express 16, 20073-20080 (2008)

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