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Master's Dissertation
DOI
https://doi.org/10.11606/D.54.1987.tde-05022014-100055
Document
Author
Full name
Ricardo Arlen Buriti da Costa
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1987
Supervisor
Committee
Li, Maximo Siu (President)
Scalabrin, Artemio
Zimmerman, Robert Lee
Title in Portuguese
Construção de um laser de centro de cor sintonizável no infravermelho próximo
Keywords in Portuguese
Infravermelho próximo
Laser de Centro de Cor Sintonizável
Abstract in Portuguese
O objetivo deste trabalho foi o desenvolvimento e caracterização de um laser de centro de cor (LCC) sintonizável no infra-vermelho próximo, o qual possui uma cavidade do tipo astigmaticamente compensada, para aplicação em espectroscopia. O meio ativo foi um cristal de KCl:Li+ contendo centros de Fa(II) numa concentração ótima, determinada experimentalmente, para o sinal de saída do LCC, meio ativo foi preparado no próprio laboratório a partir da produção de centros F pelo método de coloração aditiva. A conversão de centros F em Fa(II) foi feita via fotodissociação dos centros F através de bombeamento ótico destes. O intervalo de sintonia do LCC foi de 2,59 a 2,82 μm e sua eficiência energéticade 0,14%. A fonte de bombeamento foi um laser de Argônio de 1w de potência em regime de multilinhas
Title in English
Building of a tunable near-infrared Color Center laser
Keywords in English
Near-infrared
Tunable Color Center Laser
Abstract in English
The present work shows the development of a Near-infrared Tunable Color Center Laser (CCL), which optical cavity was astigmatically compensated, for spectroscopy application. The active medium was a KCl:Li+ crystal with Fa(II). The technique used to produce F centers was additive coloration. The F centers was converted into Fa(II) centers by optically pumping the F band of KCl with Tungsten lamp for approximately 20 minutes at room temperature. This laser covered the spectral range from 2.59 to 2.82μm, the slope efficiency was 0,14% and the beam divergence was 3.5mrad. The pumping source was a Ar+ laser multilines.
 
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Publishing Date
2014-02-18
 
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