Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing

[EN]We report on violet-light generation using the femtosecond-laser written waveguides in periodically poled MgO:LiTaO3 crystal under conditions of third-order quasi-phase matching. Ten parallel depressed cladding waveguides are successfully fabricated with different grating periods in the same sam...

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Autores: Li, Lingqi, Zhang, Bin, Romero Vázquez, Carolina, Vázquez de Aldana, Javier R., Wang, Lei, Chen, Feng
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Recursos:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/146882
Acesso em linha:http://hdl.handle.net/10366/146882
Access Level:acceso abierto
Palavra-chave:Violet light
Waveguide
Femtosecond laser writing
Quasi phase matching
Periodically poled stoichiometric lithium tantalate
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spelling Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writingLi, LingqiZhang, BinRomero Vázquez, CarolinaVázquez de Aldana, Javier R.Wang, LeiChen, FengViolet lightWaveguideFemtosecond laser writingQuasi phase matchingPeriodically poled stoichiometric lithium tantalate[EN]We report on violet-light generation using the femtosecond-laser written waveguides in periodically poled MgO:LiTaO3 crystal under conditions of third-order quasi-phase matching. Ten parallel depressed cladding waveguides are successfully fabricated with different grating periods in the same sample with fan-out χ(2) grating structures. These waveguides exhibit high optical quality with minimum insertion loss as low as 0.71 dB. Temperature and wavelength tuned second harmonic generation for different waveguides are demonstrated by using a tunable CW Ti sappire laser. Tunable violet second harmonic light has been generated with a single period over the range of 396 nm to 401 nm by varying the crystal temperature from 60 °C to 200 °C. At the quasi-phase matching temperature, 0.37 mW of violet light power at 397.2 nm is generated for a fundamental power of 336.7 mW, corresponding to a normalized conversion efficiency of 0.39%/(W·cm2). Our work contributes to designing tunable and efficient on-chip violet light sources based on femtosecond-laser written waveguides.This work was supported by the National Natural Science Foundation of China (Nos. 11874239 and 61775120); Major Program of Shandong Province Natural Science Foundation (Grant No. ZR2018ZB0649); National Key Research and Development Project (No. SQ2019YFA070063-01); MINECO (FIS2017-87970-R); and Ministerio de Economía y Competitividad de España (MAT2016-75362-C3-1-R).202120212020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/146882reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésFIS2017-87970-RMAT2016-75362-C3-1-Rinfo:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1468822026-06-07T06:28:51Z
dc.title.none.fl_str_mv Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
title Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
spellingShingle Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
Li, Lingqi
Violet light
Waveguide
Femtosecond laser writing
Quasi phase matching
Periodically poled stoichiometric lithium tantalate
title_short Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
title_full Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
title_fullStr Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
title_full_unstemmed Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
title_sort Tunable violet radiation in a quasi-phase-matched periodically poled stoichiometric lithium tantalate waveguide by direct femtosecond laser writing
dc.creator.none.fl_str_mv Li, Lingqi
Zhang, Bin
Romero Vázquez, Carolina
Vázquez de Aldana, Javier R.
Wang, Lei
Chen, Feng
author Li, Lingqi
author_facet Li, Lingqi
Zhang, Bin
Romero Vázquez, Carolina
Vázquez de Aldana, Javier R.
Wang, Lei
Chen, Feng
author_role author
author2 Zhang, Bin
Romero Vázquez, Carolina
Vázquez de Aldana, Javier R.
Wang, Lei
Chen, Feng
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Violet light
Waveguide
Femtosecond laser writing
Quasi phase matching
Periodically poled stoichiometric lithium tantalate
topic Violet light
Waveguide
Femtosecond laser writing
Quasi phase matching
Periodically poled stoichiometric lithium tantalate
description [EN]We report on violet-light generation using the femtosecond-laser written waveguides in periodically poled MgO:LiTaO3 crystal under conditions of third-order quasi-phase matching. Ten parallel depressed cladding waveguides are successfully fabricated with different grating periods in the same sample with fan-out χ(2) grating structures. These waveguides exhibit high optical quality with minimum insertion loss as low as 0.71 dB. Temperature and wavelength tuned second harmonic generation for different waveguides are demonstrated by using a tunable CW Ti sappire laser. Tunable violet second harmonic light has been generated with a single period over the range of 396 nm to 401 nm by varying the crystal temperature from 60 °C to 200 °C. At the quasi-phase matching temperature, 0.37 mW of violet light power at 397.2 nm is generated for a fundamental power of 336.7 mW, corresponding to a normalized conversion efficiency of 0.39%/(W·cm2). Our work contributes to designing tunable and efficient on-chip violet light sources based on femtosecond-laser written waveguides.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/146882
url http://hdl.handle.net/10366/146882
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv FIS2017-87970-R
MAT2016-75362-C3-1-R
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,228081

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