How a Laser is Created
Lasers are widely used in manufacturing and fabrication. They are an extremely effective way of cutting, marking and measuring. But how are these laser beams created?
To create a laser, the energy level of atoms need to be raised to an excited state. This allows them to release light as they fall back to their original ground state. Once a beam of light is generated, it is then amplified to produce a focal point. It’s at this focal point that the laser cuts or marks the surface of a material.
As the atoms move, they create a weak light. As more energy is added this light becomes more and more concentrated. Normal types of light sources like torches or LED lights have differing wavelengths. However lasers have coherent light rays which have the same wave length and this is what makes the much more powerful.