Subwavelength lattice optics by evolutionary design

Mark D. Huntington, Lincoln J. Lauhon, Teri W. Odom

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

This paper describes a new class of structured optical materials-lattice opto-materials-that can manipulate the flow of visible light into a wide range of three-dimensional profiles using evolutionary design principles. Lattice opto-materials are based on the discretization of a surface into a two-dimensional (2D) subwavelength lattice whose individual lattice sites can be controlled to achieve a programmed optical response. To access a desired optical property, we designed a lattice evolutionary algorithm that includes and optimizes contributions from every element in the lattice. Lattice opto-materials can exhibit simple properties, such as on- and off-axis focusing, and can also concentrate light into multiple, discrete spots. We expanded the unit cell shapes of the lattice to achieve distinct, polarization-dependent optical responses from the same 2D patterned substrate. Finally, these lattice opto-materials can also be combined into architectures that resemble a new type of compound flat lens.

Original languageEnglish
Pages (from-to)7195-7200
Number of pages6
JournalNano letters
Volume14
Issue number12
DOIs
Publication statusPublished - Dec 10 2014

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Keywords

  • evolutionary design
  • flat lenses
  • metasurfaces
  • nanoholes
  • nanomaterials
  • optics

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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