Laser Technology :: essays research papers fc

The optical maser is a device that a institutionalize of glister that is both scientifically and practically of great use because it is coherent roost. The beam is produced by a process known as stimulated firing, and the record book "laser" is an acronym for the phrase " idle amplification by stimulated sacking of beam of light."Light is just like radio waves in the way that it idler also carry information. The information is encoded in the beam as variations in the frequency or shape of the light wave. The good part is that since light waves have oftentimes high frequencies they can also hold much more information.Not only is the particle the smallest light unit just now it is a particle as well as a wave. In beams of light whether they are ordinary natural or artificial the photon waves go forth not be traveling together because they are not organism emitted at exactly the same moment except instead at random short bursts. Even if the light is of a single frequency that rural areament would also be true. A laser is useful because it produces light that is not only of essentially a single frequency but also coherent, with the light waves all moving along in unison.Lasers inhabit of several components. A few of the many things that the so-called active sensitive might consist of are, atoms of a gas, molecules in a liquid, and ions in a crystal. Another component consists of some method of introducing energy into the active medium, much(prenominal) as a flash lamp for example. Another component is the pair of mirrors on either side of the active medium which consists of one that transmits some of the radiation that hits it. If the active component in the laser is a gas laser than each atom is characterized by a set of energy states, or energy levels, of which it may consist. An example of the energy states could be pictured as a unevenly spaced ladder which the higher rungs mean higher states of energy and the lower rungs mea n lower states of energy. If left disturbed for a long time the atom will reach its ground state or lowest state of energy. According to quantum mechanics there is only one light frequency that the atom will work with. thither are three ways that the atom can deal with the bearing of light either it can absorb the light, or spontaneous emission occurs, or stimulated emission occurs.