Low-loss pedestal Ta2O5 nonlinear optical waveguides

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorIPEN-CNEN/SP-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSierra, Julián H.-
Autor(es): dc.creatorRangel, Ricardo C.-
Autor(es): dc.creatorSamad, Ricardo E.-
Autor(es): dc.creatorVieira, Nilson Dias-
Autor(es): dc.creatorAlayo, Marco I.-
Autor(es): dc.creatorCarvalho, Daniel O. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:24:16Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:16Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1364/OE.27.037516-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198336-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198336-
Descrição: dc.descriptionIn this work, we investigate a pedestal tantalum oxide (Ta2O5) material platform for integrated nonlinear optics (NLO). In order to achieve low propagation losses with this material, pedestal waveguides with Ta2O5 cores were designed. The nonlinear refractive index n2 of this new platform was obtained by measuring the amount of spectral broadening due to self-phase modulation (SPM) of 23 fs optical pulses at 785 nm propagating through the waveguides. In this manner, a nonlinear index of (5.8 ± 2.0) × 10−19 m2W−1 was found for this material, which is in good agreement with values reported in related works where strip waveguides were used for a similar purpose. Furthermore, due to the pedestal configuration, propagation losses as low as 1.6 dB·cm−1 for narrow waveguides and 0.1 dB·cm−1 for large waveguides were obtained. Finite element method (FEM) mode analysis was performed to calculate the mode characteristics, as well as the effective areas of the waveguides. The high nonlinear and linear refractive indices, wide bandgap and low propagation losses make this platform ideal for applications extending from the visible into the mid-IR regions of the optical spectrum. Due the large gap, Ta2O5 should have low two photon absorption at the near-IR as well.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionPolytechnic School University of São Paulo (USP)-
Descrição: dc.descriptionCenter for Lasers and Applications IPEN-CNEN/SP-
Descrição: dc.descriptionTelecommunications Department São Paulo State University (UNESP)-
Descrição: dc.descriptionTelecommunications Department São Paulo State University (UNESP)-
Descrição: dc.descriptionCNPq: 305447/2017-3-
Descrição: dc.descriptionCNPq: 32088/2018-0-
Formato: dc.format37516-37521-
Idioma: dc.languageen-
Relação: dc.relationOptics Express-
???dc.source???: dc.sourceScopus-
Título: dc.titleLow-loss pedestal Ta2O5 nonlinear optical waveguides-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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