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Q value for laser cavity

  1. Oct 28, 2012 #1
    1. The problem statement, all variables and given/known data
    Calculate the Q value for a krypton laser with λ=0.569 microns, 0.568m cavity and mirror reflectance of 100% for the rear and 52% for the output window.

    2. Relevant equations
    For a laser cavity=> Q=(4πL)/(λ(1-R1*R2))

    3. The attempt at a solution
    Q= (4*π* 0.568m)/((0.569x10^-6)(1-(1)(0.52)) = 2.61x10^7 m

    I am not sure if this is correct, can the Q factor be this high? Thanks for your help!
     
  2. jcsd
  3. Oct 28, 2012 #2

    TSny

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  4. Oct 28, 2012 #3

    TSny

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    Just to nit-pick. Q has no units. The units for L and λ cancel.
     
  5. Oct 29, 2012 #4
    Hi Tsny,
    I was also wondering about the units, thanks for your help!
     
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