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A Multi Gaussian beams explanation

  1. Dec 29, 2016 #1
    Can anyone explain intuitively or give a better explanation of multi gaussian beams and the ABCD matrix approach for sound (ultrasonics) and not light?
    Thanks!
     
  2. jcsd
  3. Jan 5, 2017 #2

    Paul Colby

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    Gold Member

    http://www.colorado.edu/physics/phys4510/phys4510_fa05/Chapter5.pdf

    This should work for sound since I don't see any polarization stuff (I just skimmed the chapter). In my brief contact with gaussian beams they were treated as point sources at complex source locations. The length of the imaginary displacement was related to the min beam diameter.
     
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