scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 1,524
LASERS The laser is a device that a beam of light that is both scientificallyand practically of great use because it is coherent light The beam is produced by aprocess known as stimulated emission and the word laser is an acronym for thephrase light amplification by stimulated emission of radiation Light is just like radio waves in the way that it can also carryinformation The information is encoded in the beam as variations in the frequency orshape of the light wave The good part is that since light waves have much higherfrequencies they can also hold much more information Not only is the particle the smallest light unit but it is a particleas well as a wave In beams of light whether they are ordinary natural or artificial thephoton waves will not be traveling together because they are not being emitted at exactlythe same moment but instead at random short bursts Even if the light is of a singlefrequency that statement would also be true A laser is useful because it produces lightthat is not only of essentially a single frequency but also coherent with the light wavesall moving along in unison Lasers consist of several components A few of the many things that theso-called active medium might consist of are atoms of a gas molecules in a liquid andions in a crystal Another component consists of some method of introducing energy intothe active medium such as a flash lamp for example Another component is the pair ofmirrors on either side of the active medium which consists of one that transmits some ofthe radiation that hits it If the active component in the laser is a gas laser than eachatom is characterized by a set of energy states or energy levels of which it mayconsist An example of the energy states could be pictured as a unevenly spaced ladderwhich the higher rungs mean higher states of energy and the lower rungs mean lower statesof
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA