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Design, fabrication and characterization of aberration-free metalenses for integrated optics applications

Grant number: 18/25372-1
Support type:Scholarships abroad - Research Internship - Doctorate (Direct)
Effective date (Start): March 04, 2019
Effective date (End): March 03, 2020
Field of knowledge:Engineering - Electrical Engineering - Telecommunications
Principal researcher:Ben-Hur Viana Borges
Grantee:Augusto Martins
Supervisor abroad: Thomas Fraser-Krauss
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Research place: University of York, England  
Associated to the scholarship:15/21455-1 - Design, fabrication and characterization of metasurfaces for diffractive optics applications, BP.DD

Abstract

The goal of this PhD exchange proposal is to design, fabricate and characterize state-of-the-art aberration-free metalenses dedicated to the miniaturization of diffractive optical components and systems. This initiative is a natural step for the candidate research activities, given the importance of his recent achievements on metasurface designs for holography applications. In addition, the candidate will have his first opportunity to actively participate in the fabrication of the structures. The rationale of this proposal is two-fold: one scientific and one pedagogical. The scientific motivation is associated with the tremendous technological importance of metalenses in the field of integrated optics, which has the potential of replacing bulky optical components that require non-trivial and expensive fabrication steps by nanostructures (the so-called metasurfaces) with potential for low-cost integration and miniaturization of optical components. Moreover, conventional lenses suffer from inherent aberrations that demands additional lenses to correct them. Metalenses, in contrast, are capable of imposing an arbitrary phase profile on an incident beam. This unprecedented degree of freedom opens the exciting possibility of achieving aberration-free lenses. In this context, the abilities developed by the candidate on the design and modelling of diffractive nanostructures will be very useful to promote the research on metalenses, as their performance is intimately connected to these nanostructures properties. Therefore, this proposal is understood as an important step towards improving and expanding the candidate skills during his PhD studies. The pedagogical motivation, by its turn, is associated both with the theoretical methodology to be developed for his metalens design and, importantly, with his immersion in a leading experimental group in photonics. Such an immersion will enrich the candidate experience by allowing him to learn crucial experimental techniques in photonics, such as the fabrication of nanostructures and their optical characterization. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MARTINS, AUGUSTO; LI, KEZHENG; LI, JUNTAO; LIANG, HAOWEN; CONTEDUCA, DONATO; BORGES, BEN-HUR V.; KRAUSS, THOMAS F.; MARTINS, EMILIANO R. On Metalenses with Arbitrarily Wide Field of View. ACS PHOTONICS, v. 7, n. 8, p. 2073-2079, AUG 19 2020. Web of Science Citations: 6.
LIANG, HAOWEN; MARTINS, AUGUSTO; BORGES, BEN-HUR V.; ZHOU, JIANYING; MARTINS, EMILIANO R.; LI, JUNTAO; KRAUSS, THOMAS F. High performance metalenses: numerical aperture, aberrations, chromaticity, and trade-offs. OPTICA, v. 6, n. 12, p. 1461-1470, DEC 20 2019. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.