Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach

In this paper, we present buried waveguides fabricated by fs laser writing in Nd3+ doped YLF crystal under double line approach (Miura et al. in Appl. Phys. Lett. 71:3329–3331, 1997). The waveguides were made by focusing two consecutive optical breakdown tracks (OBT) separated by about 20 μm. To mak...

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Detalles Bibliográficos
Autores: Biasetti, D., Neyra, E., Vázquez de Aldana, Javier R., Roso Franco, Luis, Torchia, Gustavo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/146821
Acceso en línea:http://hdl.handle.net/10366/146821
Access Level:acceso abierto
Palabra clave:femtosecond laser pulses
Index Profile
Chirp Pulse Amplification
Laser Writing
Transparent Boundary Condition
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spelling Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approachBiasetti, D.Neyra, E.Vázquez de Aldana, Javier R.Roso Franco, LuisTorchia, Gustavofemtosecond laser pulsesIndex ProfileChirp Pulse AmplificationLaser WritingTransparent Boundary ConditionIn this paper, we present buried waveguides fabricated by fs laser writing in Nd3+ doped YLF crystal under double line approach (Miura et al. in Appl. Phys. Lett. 71:3329–3331, 1997). The waveguides were made by focusing two consecutive optical breakdown tracks (OBT) separated by about 20 μm. To make the optimal OBT, we focused the fs-laser pulses 200 μm below surface at intensities above the OB threshold for the material and controlled the writing speed. The guiding structures were fabricated by using a Chirped Pulse Amplification (CPA) femtosecond (fs) laser system. We chose the optimal writing parameters in order to obtain suitable waveguides, using around 3 μJ energy and writing speed from 15 to 50 μm/s. After optically exploring the waveguides by end-fire coupling, the guiding structures showed good optical performance. Guiding index profiles were retrieved from modal analysis by using BeamProp (RSoft) commercial software. This spatial distribution of the index increment, taking into account a lower refractive barrier on the OBT region plus the compressed region between the tracks, was obtained correctly fitting profiles modes. Finally, optical spectroscopy measurements were also performed in the waveguides. The results showed that the luminescence properties of Nd3+ ions are preserved in the waveguides compared with the values obtained for bulk.This work was partially supported by Agencia Nacional de Promoción Científica y Tecnólogica. (Argentina) under project PICT-2575 and CONICET (Argentina) under project PIP 0394 and by “Ministerio de Educación y Ciencia,” Spain (Grant no FIS2009-09522 and Consolider Program SAUUL CSD2007-00013). D.B. wishes to thank Comisión de Investigaciones Científicas (Bs. As., Argentina) for his student fellowship.202120212012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/146821reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésFIS2009-09522SAUUL CSD2007-00013info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1468212026-06-07T06:28:51Z
dc.title.none.fl_str_mv Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
title Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
spellingShingle Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
Biasetti, D.
femtosecond laser pulses
Index Profile
Chirp Pulse Amplification
Laser Writing
Transparent Boundary Condition
title_short Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
title_full Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
title_fullStr Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
title_full_unstemmed Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
title_sort Buried waveguides in Nd:YLF crystals obtained by femtosecond laser writing under double line approach
dc.creator.none.fl_str_mv Biasetti, D.
Neyra, E.
Vázquez de Aldana, Javier R.
Roso Franco, Luis
Torchia, Gustavo
author Biasetti, D.
author_facet Biasetti, D.
Neyra, E.
Vázquez de Aldana, Javier R.
Roso Franco, Luis
Torchia, Gustavo
author_role author
author2 Neyra, E.
Vázquez de Aldana, Javier R.
Roso Franco, Luis
Torchia, Gustavo
author2_role author
author
author
author
dc.subject.none.fl_str_mv femtosecond laser pulses
Index Profile
Chirp Pulse Amplification
Laser Writing
Transparent Boundary Condition
topic femtosecond laser pulses
Index Profile
Chirp Pulse Amplification
Laser Writing
Transparent Boundary Condition
description In this paper, we present buried waveguides fabricated by fs laser writing in Nd3+ doped YLF crystal under double line approach (Miura et al. in Appl. Phys. Lett. 71:3329–3331, 1997). The waveguides were made by focusing two consecutive optical breakdown tracks (OBT) separated by about 20 μm. To make the optimal OBT, we focused the fs-laser pulses 200 μm below surface at intensities above the OB threshold for the material and controlled the writing speed. The guiding structures were fabricated by using a Chirped Pulse Amplification (CPA) femtosecond (fs) laser system. We chose the optimal writing parameters in order to obtain suitable waveguides, using around 3 μJ energy and writing speed from 15 to 50 μm/s. After optically exploring the waveguides by end-fire coupling, the guiding structures showed good optical performance. Guiding index profiles were retrieved from modal analysis by using BeamProp (RSoft) commercial software. This spatial distribution of the index increment, taking into account a lower refractive barrier on the OBT region plus the compressed region between the tracks, was obtained correctly fitting profiles modes. Finally, optical spectroscopy measurements were also performed in the waveguides. The results showed that the luminescence properties of Nd3+ ions are preserved in the waveguides compared with the values obtained for bulk.
publishDate 2012
dc.date.none.fl_str_mv 2012
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/10366/146821
url http://hdl.handle.net/10366/146821
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv FIS2009-09522
SAUUL CSD2007-00013
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 15,301603

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