Dual exposure, two-photon, conformal phase mask lithography for three dimensional silicon inverse woodpile photonic crystals

Daniel J. Shir, Erik C. Nelson, Debashis Chanda, Andrew Brzezinski, Paul V. Braun, John A. Rogers, Pierre Wiltzius

Research output: Contribution to journalArticlepeer-review

Abstract

The authors describe the fabrication and characterization of three dimensional silicon inverse woodpile photonic crystals. A dual exposure, two-photon, conformal phasemask technique is used to create high quality polymer woodpile structures over large areas with geometries that quantitatively match expectations based on optical simulations. Depositing silicon into these templates followed by the removal of the polymer results in silicon inverse woodpile photonic crystals for which calculations indicate a wide, complete photonic bandgap over a range of structural fill fractions. Spectroscopic measurements of normal incidence reflection from both the polymer and silicon photonic crystals reveal good optical properties.

Original languageEnglish (US)
Pages (from-to)783-788
Number of pages6
JournalJournal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
Volume28
Issue number4
DOIs
StatePublished - 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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