In the Operation of a Laser

question 56

Multiple Choice

In the operation of a laser

• A) stimulated emission occurs.
• B) there is a population inversion.
• C) the excited state will tend to be metastable.
• D) the photons emitted will have transitioned to the ground state.
• E) For the answers (a), (b), (c), and (d), three are correct and one is incorrect.

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Definitions:

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