Low-loss pedestal Ta2O5 nonlinear optical waveguides
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1364/OE.27.037516 http://hdl.handle.net/11449/198336 |
Resumo: | In 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. |
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Repositório Institucional da UNESP |
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Low-loss pedestal Ta2O5 nonlinear optical waveguidesIn 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.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Polytechnic School University of São Paulo (USP)Center for Lasers and Applications IPEN-CNEN/SPTelecommunications Department São Paulo State University (UNESP)Telecommunications Department São Paulo State University (UNESP)CNPq: 305447/2017-3CNPq: 32088/2018-0Universidade de São Paulo (USP)IPEN-CNEN/SPUniversidade Estadual Paulista (Unesp)Sierra, Julián H.Rangel, Ricardo C.Samad, Ricardo E.Vieira, Nilson DiasAlayo, Marco I.Carvalho, Daniel O. [UNESP]2020-12-12T01:10:01Z2020-12-12T01:10:01Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article37516-37521http://dx.doi.org/10.1364/OE.27.037516Optics Express, v. 27, n. 26, p. 37516-37521, 2019.1094-4087http://hdl.handle.net/11449/19833610.1364/OE.27.0375162-s2.0-85077210746Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOptics Expressinfo:eu-repo/semantics/openAccess2021-10-23T10:11:05Zoai:repositorio.unesp.br:11449/198336Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-05-23T11:22:09.827486Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
title |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
spellingShingle |
Low-loss pedestal Ta2O5 nonlinear optical waveguides Sierra, Julián H. |
title_short |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
title_full |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
title_fullStr |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
title_full_unstemmed |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
title_sort |
Low-loss pedestal Ta2O5 nonlinear optical waveguides |
author |
Sierra, Julián H. |
author_facet |
Sierra, Julián H. Rangel, Ricardo C. Samad, Ricardo E. Vieira, Nilson Dias Alayo, Marco I. Carvalho, Daniel O. [UNESP] |
author_role |
author |
author2 |
Rangel, Ricardo C. Samad, Ricardo E. Vieira, Nilson Dias Alayo, Marco I. Carvalho, Daniel O. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) IPEN-CNEN/SP Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Sierra, Julián H. Rangel, Ricardo C. Samad, Ricardo E. Vieira, Nilson Dias Alayo, Marco I. Carvalho, Daniel O. [UNESP] |
description |
In 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. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:10:01Z 2020-12-12T01:10:01Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1364/OE.27.037516 Optics Express, v. 27, n. 26, p. 37516-37521, 2019. 1094-4087 http://hdl.handle.net/11449/198336 10.1364/OE.27.037516 2-s2.0-85077210746 |
url |
http://dx.doi.org/10.1364/OE.27.037516 http://hdl.handle.net/11449/198336 |
identifier_str_mv |
Optics Express, v. 27, n. 26, p. 37516-37521, 2019. 1094-4087 10.1364/OE.27.037516 2-s2.0-85077210746 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Optics Express |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
37516-37521 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045811696697344 |