What is a laser beam and why is it important in modern technology

A laser beam is a highly focused, coherent stream of light produced by a laser device. Unlike ordinary light, which scatters in many directions and contains multiple wavelengths, a laser beam is made of light waves that travel in the same direction, at the same wavelength, and in phase with each other. This unique structure makes it extremely powerful, precise, and reliable, which is why laser...

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