Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Lasers 4 - College Papers

Lasers 4

The laser is a device that a beam of light that is both scientifically and practically of great use because it is coherent light. The beam is produced by a process known as stimulated emission, and the word "laser" is an acronym for the phrase "light amplification by stimulated emission of radiation."
Light is just like radio waves in the way that it can 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 much higher frequencies they can also hold much more information.
Not only is the particle the smallest light unit but it is a particle as well as a wave. In beams of light ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

the so-called active medium 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, such 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 mean 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. There are three ways that the atom can deal with the presence of light either it can ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.

Already a member? Login

CITE THIS PAGE:

APA
MLA
Chicago
Turabian

Lasers 4. (2008, January 1). Retrieved May 10, 2025, from http://www.essayworld.com/essays/Lasers-4/76782

"Lasers 4." Essayworld.com. Essayworld.com, 1 Jan. 2008. Web. 10 May. 2025. <http://www.essayworld.com/essays/Lasers-4/76782>

"Lasers 4." Essayworld.com. January 1, 2008. Accessed May 10, 2025. http://www.essayworld.com/essays/Lasers-4/76782.

JOIN NOW

Join today and get instant access to this and 50,000+ other essays

PAPER DETAILS

Added: 1/1/2008 10:32:18 AM
Category: Science & Nature
Type: Free Paper
Words: 757
Pages: 3

Save |

Report

SHARE THIS PAPER

SAVED ESSAYS

Save and find your favorite essays easier