Laser rate equation (population inversion)

  • #1

Homework Statement


Problems and information is as attached.


Homework Equations


As attached.


The Attempt at a Solution


As attached, I can solve part b (although I do not know whether it is correct or not). For part c, I cannot simplify reach the given equation. For part d, I not even know how to start to write the equation.

Hope somebody can help me. Thanks.

Homework Statement





Homework Equations





The Attempt at a Solution

 

Attachments

  • problem.jpg
    problem.jpg
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  • Solution.jpg
    Solution.jpg
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