Sub-diffraction focusing of light by aperiodic masks

Mostafavi S., NUTKU F., Eksioglu Y.

JOURNAL OF MODERN OPTICS, cilt.69, sa.21, ss.1214-1223, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69 Sayı: 21
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1080/09500340.2022.2159083
  • Dergi Adı: JOURNAL OF MODERN OPTICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1214-1223
  • İstanbul Üniversitesi Adresli: Evet

Özet

Diffraction of a spherical wave through various types of 2D aperiodic hollow masks is investigated computationally. Unlike a periodic transmissive grating, an aperiodic hollow mask can focus light into a hotspot with sub-wavelength diameter. In this work, several types of 2D aperiodic hollow masks are investigated in the framework of sub-diffraction focusing of light and generating superoscillations at the hotspot region.