Fully engineered homoepitaxial zinc oxide nanopillar array for near-surface light wave manipulation

Volk, János and Hakansson, A. and Miyazaki, H. T. and Nagata, T. and Shimizu, J. (2008) Fully engineered homoepitaxial zinc oxide nanopillar array for near-surface light wave manipulation. APPLIED PHYSICS LETTERS, 92 (18). ISSN 0003-6951

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Abstract

We report accurate light wave manipulation by means of an inverse designed homoepitaxial ZnO nanopillar array. Our proof-of-concept structure was optimized for focusing a near-surface light beam which propagates in a free-space parallel to the metal top surface. The on-purpose positioned and perpendicularly aligned vertical ZnO nanopillars were fabricated by homoepitaxial chemical growth technique. The obtained focal distance of 28 (mű)m as well as the light intensity distribution pattern was verified by three-dimensional finite-difference time-domain method. The demonstrated approach can provide inter- and intrachip optical connections in the next generation ZnO nanowire-based integrated photonic devices.

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