The ratio of the lifetime of the metastable excited state to the normal state is
Correct answer: A. 1:10^5
- A. 1:10^5
- B. 1:10^4
- C. 10^5:1
- D. 1:10^6
Explanation
A is the right option because The ratio of the lifetime of the metastable excited state to the normal state in lasers is typically of the order of 1:10^5. This ratio is crucial for the efficient population inversion required for laser action.
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