How do lasers use quantum theory of the atom?

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Roxy
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How do lasers make use of the quantum theory of the atom.

I tried to look it up but I couldn't understand what they were saying. :confused:
 

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Roxy said:
How do lasers make use of the quantum theory of the atom.

I tried to look it up but I couldn't understand what they were saying. :confused:

What exactly did "they" say and where did you not understand?

Should have asked this in the QM Physics section - you would have gotten more responses.

Zz.
 
Roxy said:
How do lasers make use of the quantum theory of the atom.
Lasers work by having electrons in the atoms jump up and down energy levels. Does that count as quantum?
 

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