Subwavelength structures for broadband antireflection application

Chia Jen Ting, Chi Feng Chen, C. P. Chou

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The subwavelength structures are designed and fabricated for broadband antireflection application. Under target of zero reflectivity, the parameters of periodic 2-D continuous conical structures are analyzed by the finite-difference time-domain (FDTD) method. The corresponding conical structures are obtained with spatial period of 350 nm and structure height of 300 nm, respectively. The 2-D continuous conical structured surface is fabricated by micro-replication process combining with the originated structure fabrication realized by interference lithography, Ni mold electroplation and replication by using UV imprinting into plastics. The average reflectances of the simulation and replicated polymer prototype are about 0.50% and 0.54% within the spectral ranges of 400-650 nm, respectively. In a word, the subwavelength structured surface with low reflection is developed and proved to be highly consistent with the simulation results.

Original languageEnglish
Pages (from-to)434-438
Number of pages5
JournalOptics Communications
Volume282
Issue number3
DOIs
StatePublished - 1 Feb 2009

Keywords

  • Antireflection
  • Finite-difference time-domain
  • Micro-replication process
  • Nano-imprinting process
  • Nanostructure
  • Roll to Roll
  • Subwavelength structure

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