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Peak electric field of a laser light.

  1. Nov 5, 2012 #1
    1. The problem statement, all variables and given/known data


    A laser produces an average power of 7.0 W in a light beam 1.0 mm in diameter. Find (a) the average intensity and (b) the peak electric field of the laser light


    2. Relevant equations

    Intensity = P/ A
    Unsure about part B

    3. The attempt at a solution

    For part A I did P/( ∏ * r^2) which came to be 7W/( ∏ * .0005^2) which came to 8912676 w/m^2

    But I need help finding out how to do part B. Any help would be great.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 5, 2012 #2

    Delphi51

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