Practice Einstein’s Theory (a & B Coefficients) (1.1) - Lasers

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6 sample questions

Question 1.
What happens during absorption?
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Think about where the energy goes when a photon interacts with an atom.
Question 2.
What is spontaneous emission?
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Consider an example like a light bulb that turns on by itself.
3Question 3.
What occurs during spontaneous emission?
- True
- False
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Think about whether energy is released without any external help.
4Question 4.
What is the purpose of the B coefficients?
- They measure absorption only.
- They relate to absorption and stimulated emission.
- They measure spontaneous emission.
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Consider all the interactions between light and atoms.
Question 5.
A laser uses a population inversion of 10:1. If 1000 atoms are in the ground state, how many are in the excited state?
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Use the population ratio to find out how many excited atoms are present.
Question 6.
Explain how increasing the B12 coefficient affects laser performance.
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Think about probabilities and how they influence absorption and emission.

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