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Schawlow and Townes have proposed a technique for the generation of very monochromatic radiation in the infra-red optical region of the spectrum using an alkali vapour as the active medium. Javan and Sanders have discussed proposals involving electron-excited gaseous systems. In this laboratory an optical pumping technique has been successfully applied to a fluorescent solid resulting in the attainment of negative temperatures and stimulated optical emission at a wave-length of 6943 Å.; the active material used was ruby (chromium in corundum).

Notas/Comentarios de José Antonio Martín Pereda:
Artículo con el primer láser (de rubí).


  • Autor/es: H. Maiman.
  • Fecha: 1960-08
  • Publicado en: Nature, 187, pag 493, August 1960.
  • Idioma: Inglés
  • Formato: PDF
  • Contribución: José Antonio Martín Pereda.
  • Palabras clave: Láseres y electroóptica

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