Fabrication of semiconductor-and polymer-based photonic crystals using nanoimprint lithography
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The technology of fabricating photonic crystals with the use of nanoimprint lithography is described. One-and two-dimensional photonic crystals are produced by direct extrusion of polymethyl methacrylate by Si moulds obtained via interference lithography and reactive ion etching. The period of 2D photonic crystals, which present a square array of holes, ranges from 270 to 700 nm; the aperture diameter amounts to the half-period of the structure. The holes are round-shaped with even edges. One-dimensional GaAs-based photonic crystals are fabricated by reactive ion etching of GaAs to a depth of 1 μm through a mask formed using nanoimprint lithography. The resulting crystals have a period of 800 nm, a ridge width of 200 nm, and smooth nearly vertical side walls.
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- Fabrication of semiconductor-and polymer-based photonic crystals using nanoimprint lithography
Volume 50, Issue 8 , pp 1043-1047
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- 1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia
- 2. Department of Electrical and Information Engineering, Institute of Materials Science, University of Wuppertal, Gauss-Strasse 20, D-42097, Wuppertal, Germany