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I Calculation of the absorption coefficient for GaAs

  1. Apr 3, 2016 #1
    Anyone can explain me this example?
    I substitute value for
    e = 1.602*10-19;
    m0 = 9.1*10-31;
    pi = 3.14;
    and calculated value for μav in matlab.
    I received 1.7104*10-19. But in exam this value is 0.68*10-25.
    What is i wrong?
    please help me.
    Thank you.
  2. jcsd
  3. Apr 4, 2016 #2


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    2017 Award

    Staff: Mentor

    WolframAlpha calculates 6.84*10-29 Cm. Perfect confusion!
  4. Apr 6, 2016 #3
    Thanks you mfb.
    Now i known what is wrong.
    Unit error. :)
    Thanks you again!
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