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Alfred Kastler

  • French physicist
  • Born May 3, 1902
  • Died January 7, 1984

Alfred Kastler (French: [kastlɛʁ]; 3 May 1902 – 7 January 1984) was a French physicist, and Nobel Prize laureate.


We should note that this latter type of shift was successfully amplified to a considerable extent by Russian physicists using the intense light of a ruby laser whose wavelength is close to that of a transition of the potassium atom.




I must confess that, at that time, I had absolutely no knowledge of the slowness of the relaxation processes in the ground state, processes which take place in collisions with the wall or with the molecules of a foreign gas.



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