Optical meta-devices: Advances and applications

M.-K. Chen, C.H. Chu, R.J. Lin, J.-W. Chen, Y.-T. Huang, T.-T. Huang, H.Y. Kuo, Din-ping Tsai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

© 2019 The Japan Society of Applied Physics.We report the most recent advances in optical meta-devices and their applications. The general principle and method of optical meta-devices are introduced. The development of the two most recent and state-of-the-art optical meta-devices, a broadband achromatic optical meta-lens in the visible range and a 60 × 60 achromatic meta-lens array, is shown. Full-color achromatic imaging in visible frequency (400 nm to 660 nm) is demonstrated with high efficiency (maximum 67%, average around 40%) by a GaN achromatic meta-lens. A nature-inspired 60 × 60 GaN achromatic meta-lens array with an individual meta-lens diameter of 21.65 ?m, a focal length of 49 ?m, and a numerical aperture of 0.2157 shows high-dimensional light-field image capture including the depth and velocity of the imaging objects. The total number of nano-antennas of the meta-lens array is more than 33 million which covers an area of 1.2 × 1.2 mm2. Results show the important advantages of optical meta-devices for flat optics are their small size, light weight, high efficiency, lower energy consumption, and mass producibility by semiconductor processes.
Original languageEnglish
Article numberSK0801
JournalJapanese Journal of Applied Physics
Volume58
Issue numberSK
DOIs
Publication statusPublished - 1 Jan 2019

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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