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Master's Dissertation
DOI
10.11606/D.85.2016.tde-27062016-142722
Document
Author
Full name
Allan Bereczki
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Wetter, Niklaus Ursus (President)
Martinelli, Marcelo
Matos, Christiano José Santiago de
Title in Portuguese
Desenvolvimento de um laser DPSSL polarizado com mais de 100 W de potência e parâmetro de qualidade próximo de um
Keywords in Portuguese
laser de estado sólido
Nd:YAG
ressonadores dinamicamente estáveis
Abstract in Portuguese
A operação dinamicamente estável com zonas conjuntas foi obtida para um ressonador laser contendo dois bastões de Nd:YAG com módulos laser comerciais. O ressonador não polarizado gerou 115 W de potência no modo transversal fundamental TEM00. Quando polarizado por lâmina de Brewster atingiu 100,5W de potência de saída com 91% de polarização. Quando o ressonador foi polarizado com um polarizador de filme fino, obteve-se melhora na qualidade de feixe e um aumento na polarização, com o valor de M2 sendo 1,56 e 1,84 nas direções x e y respectivamente com 95,4% de polarização. A potência de saída foi, ao nosso conhecimento, a mais alta obtida para lasers polarizados operando no modo fundamental e usando módulos lasers comerciais de Nd:YAG bombeados lateralmente por diodos sem nenhuma preparação especial.
Title in English
Development of a polarized DPSSL laser with over 100 W of power with beam parameter near one
Keywords in English
dynamically stable resonators
Nd:YAG
solid-state lasers
Abstract in English
Dynamically stable operation with joined stability zones of a linearly polarized resonator is shown for a laser containing two diode side-pumped Nd:YAG rods with commercial laser modules. The unpolarised resonator provided 115 W of TEM00 output. When polarized by a Brewster plate, it reached 100.5 W of output power with 91% polarization. When the resonator was polarized by a thin film polarizer, an increase in beam quality was obtained with M2 values of 1.56 and 1.84 in the x and y directions, respectively with 95.4% polarization. The output power achieved is, to our knowledge, the highest reported for polarized, fundamental-mode lasers using commercial, diode side-pumped Nd:YAG modules without any special preparation.
 
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Publishing Date
2016-10-10
 
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