What is a laser?

In short, the laser is the light produced by the excitation of matter. And we can do lots of work with a laser beam.

In Wikipedia, A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word “laser” is an acronym for “light amplification by stimulated emission of radiation”. The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow.

A laser differs from other sources of light in that it emits light that is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum. Alternatively, temporal coherence can be used to produce ultrashort pulses of light with a broad spectrum but durations as short as a femtosecond.

Lasers are used in optical disc drives, laser printers, barcode scanners, DNA sequencing instruments, fiber-optic, semiconducting chip manufacturing (photolithography), and free-space optical communication, laser surgery, and skin treatments, cutting and welding materials, military and law enforcement devices for marking targets and measuring range and speed, and in laser lighting displays for entertainment.

After long historical development of laser technology, the laser can be used in much different industry application, and one of the most revolution use if for cutting industry, no metal the metal or non-metal industry, laser cutting machine update the traditional cutting method, improve lots of production efficiency for the produce industry, such as garment, textile, carpet, wood, acrylic, advertisement, metalworking, automobile, fitness equipment and furniture industries.

Laser became one of the best cutting tools cause of its high precise and high-speed cutting features.

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