Stimulated Optical Radiation in Ruby

  title={Stimulated Optical Radiation in Ruby},
  author={Theodore Harold Maiman},
  • T. Maiman
  • Published 1 August 1960
  • Physics
  • Nature
Schawlow and Townes1 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. Javan2 and Sanders3 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… 

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