Pb-7 a. Find the value of the wavelength (2) at which the probability of spontaneous emission equals that of the stimulated emission (R=1) at the room temperature (300 K) b. What will be the temperature if the wavelength (=500nm)

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A: Given, There are 3 level energy system of molecular laser. E1=0eVE2=0.18eVE3=0.30eV

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A:

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A:

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A:

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A: Diagram showing the 3-level laser is shown below:

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A: Detailed solution is given below:

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A: