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Why was the laser invented?

Updated: 11/6/2022
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13y ago

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In 1954, an American scientist named Charles H. Townes designed a device that used Einstein's insight to generate a tightly focused, extremely intense beam of microwaves. Microwaves are a type of electromagnetic wave. Townes called his device a maser. After several years of research, Townes began working with his brother-in-law, Arthur Schawlow, to create a new device. This device would resemble a maser but would achieve the same tightly focused, intense beam with visible light. They called this device a laser.

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