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Homework Help: Power density calculation of Laser

  1. Jul 2, 2009 #1
    1. The problem statement, all variables and given/known data
    In our Lab we have a Nd:YAG pulsed laser of 420mj ,10 ns pulse width...focused to 1 mm spot

    2. Relevant equations

    whats the power density? how it calculate?

    3. The attempt at a solution
    Last edited: Jul 2, 2009
  2. jcsd
  3. Jul 2, 2009 #2


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    Homework Helper

    Power density is the power delivered by the laser per unit area. That means you need to know two things to calculate it:

    (1) the laser pulse's power
    (2) the area

    Can you get the answer now?
  4. Jul 2, 2009 #3
    Tnx bhai Yes i got it..
    (1)Is Laser pulse's power = Laser energy /Pulse duration ??

    In this machine we can Adjust Pulse repetetion rate and Energy per volt
    (2) Is it possible to find out Pulse Duration from this pulse repetetion rate?
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