Laser à fibra dopada com érbio em regime de acoplamento híbrido de modos com absorção saturável baseada em nanotubos de carbono

• Ano de defesa: 2013
• Autor(a) principal: Pertile, Heidi Kaori Sato
• Orientador(a): Souza, Eunézio Antônio de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Presbiteriana Mackenzie
• Palavras-chave em Português: laser à fibra dopada com Érbio; acoplamento híbrido de modos; nanotubos de carbono; modulador eletro-óptico; taxa de 10 GHz
• Palavras-chave em Inglês: Erbium doped fiber laser; hybrid mode-locking; carbon nanotubes; electro-optic modulator; repetition rate of 10 GHz
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: http://dspace.mackenzie.br/handle/10899/24344

In this work we present a study on the generation of pulse train in an Erbium doped fiber laser in the hybrid mode-locking regime operating with short pulses at high repetition rates. The short pulses are generated by passive mode-locking technique using carbon nanotubes as saturable absorbers. High repetition rates are generated by active mode-locking technique using a phase modulator. We built cavities with three different mode-locking regimes: active, passive and, finally, hybrid, to compare results. In active and hybrid cavities we used an electro-optical modulator. In passive and hybrid cavities we used a homemade film of a polymer containing carbon nanotubes with diameter of 1 nm. With the cavity operating in the hybrid regime we obtained pulse durations of 1.77 ps with repetition rate of 10 GHz.