Estudo de um laser à fibra dopada com Érbio em regime de acoplamento passivo de modos com o uso de nanotubos de carbono como absorvedores saturáveis

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dc.contributor.advisorSouza, Eunézio Antônio dept_BR
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/9756214150140645por
dc.contributor.authorRosa, Henrique Guimarãespt_BR
dc.creator.Latteshttp://lattes.cnpq.br/7713098655067147por
dc.date.accessioned2016-03-15T19:37:29Z
dc.date.accessioned2020-05-28T18:08:27Z
dc.date.available2011-01-20pt_BR
dc.date.available2020-05-28T18:08:27Z
dc.date.issued2010-08-06pt_BR
dc.description.abstractIn this work we present a study about ultrashort pulse-train generation in Erbiumdoped fiber lasers, by the passive mode-locking technique, with the use of carbon nanotubes saturable absorbers. Carbon nanotubes were incorporated into laser cavities by two techniques: thermophoresis optically-driven deposition and thin films incorporating carbon nanotubes. The second technique has become more advantageous than the first one, because is possible to control carbon nanotubes concentration and thin films thicknesses. Additionally, we present a study about thin films incorporating carbon nanotubes optimization, in order to maximize generated output bandwidths in passively mode-locked Erbium-doped fiber lasers. We used 0.8 and 1.0 nm diameters carbon nanotubes, fabricated thin films with different transmission values (different αL product values), laser cavities with different features, such as total cavity length, total accumulated dispersion, repetition rate. In this context, best results were achieved with thin films containing 1.0 nm diameter carbon nanotubes, with films transmission about 37% (αL product close to 1.0), in 9 m long laser cavity (0.8 m of highly- Erbium-doped fiber and 8.2 m of SMF) of total accumulated dispersion of 0.153 ps/nm. The largest bandwidth measured, with those characteristics cavity parameters, was 5,7 nm.eng
dc.formatapplication/pdfpor
dc.identifier.urihttp://dspace.mackenzie.br/handle/10899/24304
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Abertopor
dc.subjectlaser à fibra dopada com Érbiopor
dc.subjectacoplamento passivo de modospor
dc.subjectnanotubos de carbonopor
dc.subjectabsorvedores saturáveispor
dc.subjectotimizaçãopor
dc.subjecterbium-doped fiber laserseng
dc.subjectpassive mode-lockingeng
dc.subjectcarbon nanotubeseng
dc.subjectsaturable absorberseng
dc.subjectoptimizationeng
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA ELETRICApor
dc.thumbnail.urlhttp://tede.mackenzie.br/jspui/retrieve/3779/Henrique%20Guimaraes%20Rosa.pdf.jpg*
dc.titleEstudo de um laser à fibra dopada com Érbio em regime de acoplamento passivo de modos com o uso de nanotubos de carbono como absorvedores saturáveispor
dc.typeDissertaçãopor
local.contributor.board1Matos, Christiano José Santiago dept_BR
local.contributor.board1Latteshttp://lattes.cnpq.br/6843256597783676por
local.contributor.board2Cruz, Flavio Caldas dapt_BR
local.contributor.board2Latteshttp://lattes.cnpq.br/5623828846627003por
local.publisher.countryBRpor
local.publisher.departmentEngenharia Elétricapor
local.publisher.initialsUPMpor
local.publisher.programEngenharia Elétricapor
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