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Quantum Well lasing

  1. Dec 17, 2014 #1
    Hi everybody, I want to solve this problem but I'm stucked with several equations all over the books, if anybody is expert in lasing please help me!

    We want to make a laser at ħω=Ec-Ev. Assume that the mirror reflectivity is [(n-1)^2] / [(n+1)^2] , where n=3.5 is the refractive index of InGaAsP, the internal loss of the laser cavity is very small, and the confinement factor is 0.02 (the power of lasing field in the QW divided by the total power in the laser cavity), calculate the threshold gain of QW in order for the laser to lase. Ec - Ev is 1.3636 eV
    thank you!
  2. jcsd
  3. Dec 23, 2014 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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