Lasers And Their Uses

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emission. The bombarding photon of the emitted photon may
then strike other excited atoms, stimulating further emission of photons, all
of the same frequency and phase. This process produces a sudden burst of
coherent radiation as all the atoms discharge in a rapid chain reaction. The
light beam produces is usually pencil thin and maintains its size and direction
over very long distances.

Lasers vary greatly in the way they look and what they are used for.
Some lasers are as large as buildings while others can be the size of a grain
of salt.

There are many parts to lasers. I will now explain what they are and
their uses.

1) Pumping systems:

The pumping system is used to transmit energy to the atoms or molecules
of the medium used in the laser.

a. optical pumping systems uses photons provided by a source such as a Xenon
gas flash lamp or another laser to transfer energy to the lasing material. The
optical source must provide photons which correspond to the ...

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