Lasers
Beginning of paper
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 radiati ....
Middle of paper
.... 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 consist of several components. A few of the many things that 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 mirro ....
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Page count: 3 (approximately 250 words per page)
