Electrically Driven Varifocal Silicon Metalens
Visualitza/Obre
10.1021/acsphotonics.8b00948
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/123066
Tipus de documentArticle
Data publicació2018-10-08
EditorACS
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
ProjecteQnanoMECA - Quantum Optomechanics with a levitating nanoparticle (EC-H2020-647901)
AGR-INSTITUTO DE CIENCIAS FOTONICAS (MINECO-SEV-2015-0522)
IJCI-2015-25438 (MINECO-IJCI-2015-25438)
AGR-INSTITUTO DE CIENCIAS FOTONICAS (MINECO-SEV-2015-0522)
IJCI-2015-25438 (MINECO-IJCI-2015-25438)
Abstract
Optical metasurfaces have shown to be a powerful approach to planar optical elements, enabling an unprecedented control over light phase and amplitude. At that stage, where a wide variety of static functionalities have been accomplished, most efforts are being directed toward achieving reconfigurable optical elements. Here, we present our approach to an electrically controlled varifocal metalens operating in the visible frequency range. It relies on dynamically controlling the refractive index environment of a silicon metalens by means of an electric resistor embedded into a thermo-optical polymer. We demonstrate precise and continuous tuneability of the focal length and achieve focal length variation larger than the Rayleigh length for voltage as small as 12 V. The system time-response is of the order of 100 ms, with the potential to be reduced with further integration. Finally, the imaging capability of our varifocal metalens is successfully validated in an optical microscopy setting. Compared to conventional bulky reconfigurable lenses, the presented technology is a lightweight and compact solution, offering new opportunities for miniaturized smart imaging devices.
CitacióAfridi, A. [et al.]. Electrically Driven Varifocal Silicon Metalens. "ACS Photonics", 8 Octubre 2018.
ISSN2330-4022
Versió de l'editorhttps://pubs.acs.org/doi/10.1021/acsphotonics.8b00948
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Electrically Va ... on Metalens_REVISED_LP.pdf | 602,5Kb | Visualitza/Obre |