Laser Anniversary

Today when doing a search in google, I discovered thanks to the logo, which is the anniversary of the first laser. It is known that a May 16, 1960 discovery of the first laser beam but better see a little history about the LASER.

Wikipedia said:

A laser (Light Amplification by Stimulated Emission of Radiation, Light Amplification by Stimulated Emission of Radiation) is a device that uses a quantum mechanical effect, induced or stimulated emission, to generate a coherent beam of a suitable and with the size, shape and purity control.

History

In 1916, Albert Einstein laid the foundation for the development of lasers and their predecessors, the maser (microwave emitting), using the law of Max Planck radiation based on the concepts of spontaneous and induced emission of radiation. The theory was forgotten until after the Second World War when it was definitively demonstrated by Willis Lamb and RC Rutherford.

In 1953, Charles H. Townes and graduate students James P. Gordon and Herbert J. Zeiger built the first maser, a device operating on similar principles to the laser but that produces a coherent beam of microwaves. Townes's maser was incapable of continuous output. Gennadiyevich Nicolay Basov and Aleksandr Mikhailovich Prokhorov of the Soviet Union worked independently on the quantum oscillator and solved the problem of obtaining a maser of continuous light output, using systems with more than two energy levels. Townes, Basov and Prokhorov shared the Nobel Prize in Physics in 1964 for "fundamental work in the field of quantum electronics, which led to the construction of oscillators and amplifiers based on the principles of the maser-laser.

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