An increasing amount of research is being devoted to improve the spatial resolution in direct laser writing (DLW) tech- nique allowing the fabrication of complex 2D and 3D nanoscale devices. Among the various possibilities, we exploited uncom- mon features as extraordinary transmittance, zero re ectance, giant dephasing and epsilon-near-zero relative permittivity of a metal/ insulator/ metal/ insulator (MIMI) planar multilayer to upgrade a standard two-photon DLW process to hyper resolution. The improved resolution opens new opportunities in the fabri- cation of next-generation nanoscale devices such as metalenses, photonic circuits to name a few and in thermoplamonics. A high writing resolution is crucial for industrial applications in fields like anti-counterfeiting and at optics. Having reduced the voxel size by 89% in height and 50% in width, we fabricated full- dielectric broadband metalenses and in order to demonstrate the full capability of the achieved hyper resoution flat detailed bas-relief of Da Vinci’s ”Lady with an Ermine” has been realized.

Optical nanocavity enabling hyper resolution in 2D and 3D two photon direct writing lithography towards flat metalens / Lio, Giuseppe Emanuele; Ferraro, Antonio; Ritacco, Tiziana; Aceti, Dante Maria; De Luca, Antonio; Giocondo, Michele; Caputo, Roberto. - ELETTRONICO. - (2022), pp. 1-4. (Intervento presentato al convegno ICOP22 Italiana Conference on Optics and Photonics tenutosi a Trento) [10.1109/ICOP56156.2022.9911744].

Optical nanocavity enabling hyper resolution in 2D and 3D two photon direct writing lithography towards flat metalens

Lio, Giuseppe Emanuele
;
2022

Abstract

An increasing amount of research is being devoted to improve the spatial resolution in direct laser writing (DLW) tech- nique allowing the fabrication of complex 2D and 3D nanoscale devices. Among the various possibilities, we exploited uncom- mon features as extraordinary transmittance, zero re ectance, giant dephasing and epsilon-near-zero relative permittivity of a metal/ insulator/ metal/ insulator (MIMI) planar multilayer to upgrade a standard two-photon DLW process to hyper resolution. The improved resolution opens new opportunities in the fabri- cation of next-generation nanoscale devices such as metalenses, photonic circuits to name a few and in thermoplamonics. A high writing resolution is crucial for industrial applications in fields like anti-counterfeiting and at optics. Having reduced the voxel size by 89% in height and 50% in width, we fabricated full- dielectric broadband metalenses and in order to demonstrate the full capability of the achieved hyper resoution flat detailed bas-relief of Da Vinci’s ”Lady with an Ermine” has been realized.
2022
ICOP22 Italiana Conference on Optics and Photonics
ICOP22 Italiana Conference on Optics and Photonics
Trento
Lio, Giuseppe Emanuele; Ferraro, Antonio; Ritacco, Tiziana; Aceti, Dante Maria; De Luca, Antonio; Giocondo, Michele; Caputo, Roberto
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1285340
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