Lithium Niobate Meta-Optics

Anno: 2022

Autori: Fedotova A., Carletti L., Zilli A., Setzpfandt F., Staude I., Toma A., Finazzi M., De Angelis C., Pertsch T., Neshev DN., Celebrano M.

Affiliazione autori: Friedrich Schiller Univ, Inst Solid State Phys, D-07743 Jena, Germany; Friedrich Schiller Univ, Inst Appl Phys, Abbe Ctr Photon, D-07743 Jena, Germany; Univ Brescia, Dept Informat Engn, I-25121 Brescia, Italy; INO CNR, I-25121 Brescia, Italy; Politecn Milan, Dept Phys, I-20133 Milan, Italy; Fraunhofer Inst Appl Opt & Precis Engn, D-07745 Jena, Germany; Ist Italiano Tecnol, I-16163 Genoa, Italy; Australian Natl Univ, Res Sch Phys, ARC Ctr Excellence Transformat Meta Opt Syst TMOS, GPO Box 4, Canberra, ACT 2601, Australia.

Abstract: The rapid development of optical metasurfaces, 2D ensembles of engineered nanostructures, is presently underpinning a steady drive toward the miniaturization of many optical functionalities and devices. The list of material platforms for optical metasurfaces is rapidly expanding as, over the past few years, we have witnessed a surge in establishing meta-optical elements from high-index, highly transparent materials with strong nonlinear and electro-optic properties. In particular, crystalline lithium niobate (LiNbO3), already a prime material for integrated photonics, has shown great promise for novel meta-optical components, thanks to its large electro-optical coefficient and second order nonlinear response and its broad transparency window ranging from the visible to the mid-infrared. Recent advances in nanofabrication technology have indeed marked a new milestone in the miniaturization of LiNbO3 platforms, hence enabling the first demonstrations of LiNbO3-based metasurfaces. These seminal works set a steppingstone toward the realization of ultrathin monolithic nonlinear light sources, efficient quantum sources of correlated photon pairs, as well as electro-optical modulators. Here, we review these recent advances by providing a perspective on their potential applications and examining the possible setbacks and limitations of these emerging technologies.

Giornale/Rivista: ACS PHOTONICS

Volume: 9 (12)      Da Pagina: 3745  A: 3763

Maggiori informazioni: The authors acknowledge financial support from the European Union’s Horizon 2020 Research and Innovation program ’METAFAST’ (Grant Agreement No. 899673), the Italian Ministry of University and Research through the PRIN project NOMEN (2017MP7F8F), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the International Research Training Group Meta-ACTIVE (IRTG 2675, project number 437527638) and the Collaborative Research Center NOA (CRC 1375, project number 398816777) and the Australian Research Council Centres of Excellence program (CE200100010).
Parole chiavi: metasurfaces; lithium niobate; nonlinear optics; electro-optics; quantum optics; frequency conversion
DOI: 10.1021/acsphotonics.2c00835

Citazioni: 60
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-08
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