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Fabry perot Laser

  1. Sep 6, 2011 #1
    1. The problem statement, all variables and given/known data
    Consider a Fabry-Perot laser, length 0.1m, with an unsaturated gain coefficient, [itex]\gammao[/itex]=1m-1

    one of the mirrors of the Fabry-Perot cavity is perfectly reflecting, the other reflects 95% of the light and transmits 5%. wit the aid of a brief calculation explain why steady state laser oscillation is expected?

    i had no idea on how to approach this question so i did some research and i found this book kind of helpful under this link:
    http://books.google.co.nz/books?id=...rip gain greater than round trip loss&f=false

    2. Relevant equations

    after reading a chapter in the book the steady state condition is R1R2exp(2aL-j2wL/c)=1



    3. The attempt at a solution

    since i am not given any frequency value i only solved the condition for the round trip amplitude coefficent and the way i calculated it was R1R2exp(2aL)=1 --->0.95exp(2*1*0.1)=1.15
    please help i cam confused on how to prove this
     
  2. jcsd
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