SOBRE LASERS SEMICONDUTORES
Resumo
O laser semicondutor surgiu em meados de 1960, tornando-se um dos mais difundidos dispositivo já desenvolvido a partir de pesquisa básica. Este instrumento ótico apresenta algumas características próprias: boa estabilidade na potência, pequena dimensão, vasta faixa de cobertura espectral, baixo consumo de energia, baixo custo e possibilidade de modulação direta na corrente de injeção. O laser semicondutor se apresenta como importante ferramenta para pesquisa científica na área de física atômica, espectroscopia de alta resolução, área médica, como também em leitores de código de barras, DVDs e CD-players, trenas eletrônicas, indicadores de nível, sensores industriais, dentre outros. Este artigo tem como objetivo fazer uma breve revisão sobre conceitos básicos da teoria laser aplicada particularmente aos lasers de semicondutores.
Palavras-chave: Lasers semicondutores. Instrumento ótico. Ótica.
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