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dc.contributor.author
Tejerina, Matías Rubén
dc.contributor.author
Torchia, Gustavo Adrian
dc.date.available
2018-06-19T17:21:38Z
dc.date.issued
2016-11
dc.identifier.citation
Tejerina, Matías Rubén; Torchia, Gustavo Adrian; Testing a novel μ-Raman method to retrieve refractive index and density field from femtosecond laser-written optical waveguides
; Springer; Applied Physics A: Materials Science and Processing; 122; 11; 11-2016; 1-8
dc.identifier.issn
0947-8396
dc.identifier.uri
http://hdl.handle.net/11336/49312
dc.description.abstract
In this work, we analysed the refractive index field and other local material properties of femtosecond laser-written waveguides properly combining a novel and direct Raman strategy, waveguides coupling and instrumented nano-indentation. At first, we measured a 2D Raman map within the cross section of femtosecond laser-written waveguides. Then, the Raman Phonon Deformation Constants of lithium niobate were employed to retrieve the strain and density variation from the A1(TO) phonon shifts in the analysed region. We test the results obtained with different combinations of phonons by computing the numerical guided modes and comparing them with those experimentally measured. As a relevant finding, we found that the combination of the A1(TO)1 and A1(TO)4 phonon shifting is the most proper one to compute strain, density and refractive index variation, almost in this kind of waveguide. Finally, a linear path across waveguides cross section was explored with instrumented nano-indentation and the expected variation of local density was detected through a softening of the elastic module observed in the region directly modified by the ultra-fast laser.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Residual Strain
dc.subject
Optical Materials
dc.subject
Refractive Index Variation
dc.subject.classification
Recubrimientos y Películas
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Testing a novel μ-Raman method to retrieve refractive index and density field from femtosecond laser-written optical waveguides
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-18T21:24:12Z
dc.identifier.eissn
1432-0630
dc.journal.volume
122
dc.journal.number
11
dc.journal.pagination
1-8
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Tejerina, Matías Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina
dc.description.fil
Fil: Torchia, Gustavo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina
dc.journal.title
Applied Physics A: Materials Science and Processing
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00339-016-0513-x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00339-016-0513-x
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