Question

The material in which the population inversion is achieved is called as
Options
active medium
O metastable medium
O passive medium
stable medium
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Answer 1

Answer:

stable medium

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Answer 2

Answer:

The correct answer will be -

(D) Stable medium

Explanation:

What is Population Inversion?

• The redistribution of atomic energy levels takes place in a system so that laser or maser action can occur.
• Normally, The system of atoms is in temperature equilibrium, and there are always more atoms in the low energy state than in the high energy state.

• Active medium - It is a material in which the population inversion will take place.
• Stable medium - A material that achieves a stable population inversion.

So the correct answer will be (D) stable medium

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