What was the color of the light emitted by Maiman's first functional laser?
Answer
red
The light resulting from the stimulated emission within Theodore Maiman's ruby laser system was characterized by a specific visible color. The revolutionary light emitted during the first successful operation was red. This corresponds to an approximate wavelength of 694.3 nanometers ($ ext{nm}$). This coherent, pulsed red light was the tangible proof that the solid-state device was generating amplified light where all the photons were traveling precisely in phase. While some researchers focused on continuous-wave gas systems, Maiman's pulsed red light was the undeniable first demonstration of laser action.
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The world's first laser was successfully operated by Theodore Maiman
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