“Feynman uses Dirac's notation to describe the quantum mechanics of stimulated emission… he applies that physics to… dye molecules… In this regard, Feynman could have predicted the existence of the tunable laser.”

—  F. J. Duarte

in Introduction to Lasers, [F. J. Duarte, Tunable Laser Optics, Elsevier Academic, 2003, 0-12-222696-8, 3] (while discussing The Feynman Lectures on Physics).

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Chilean-American physicist 1954

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