Laser Technology Explained

A laser is a device that produces a tightly focused beam of light through a process called stimulated emission. Unlike light from a bulb or the sun, laser light travels in one direction, at a single wavelength, with its waves moving in step with...

If you're not yet familiar with the basic principle behind all lasers — light amplified through stimulated emission — start here: What is a Laser and How Does It Work? Beyond that shared foundation, laser machines diverge sharply bas...