Dual exposure, two-photon, conformal phase mask lithography for three dimensional silicon inverse woodpile photonic crystals
- Univ. of Illinois at Urbana-Champaign, IL (United States); Univ. of California, Santa Barbara, CA (United States); University of Illinois
- Univ. of Illinois at Urbana-Champaign, IL (United States); Univ. of California, Santa Barbara, CA (United States)
The authors describe the fabrication and characterization of three dimensional silicon inverse woodpile photonic crystals. Here, 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.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- FG02-07ER46471; SC0001293; FG02-07ER46453
- OSTI ID:
- 1875137
- Alternate ID(s):
- OSTI ID: 1380396
- Journal Information:
- Journal of Vacuum Science and Technology B, Journal Name: Journal of Vacuum Science and Technology B Journal Issue: 4 Vol. 28; ISSN 2166-2746
- Publisher:
- American Vacuum Society / AIPCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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