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ABCD Gaussian Beam Propagation is an application that calculates the various properties of a laser beam propagating through simple optical elements. It displays the beam and the optical setup in a graphical window that can be manipulated by the user. A table shows the values at all points, they can be copied and used in plotting applications.


  • User-defined inputs (wavelength, radius of curvature, size) and M-square (i.e. multimode equivalence)
  • Calculate propagation through free space, dielectrics, lenses and mirrors. Use toolbars to add elements
  • Calculate eigenmodes of a laser

What's New in ABCD

Version 4.1:
  • Now works on OS X 10.6.x and 10.7.x
  • Printing, in the form of a detailed calculation summary
  • New optical elements: gaussian ducts
  • Significant performance improvements, especially for large setups with many elements
  • User can choose calculations performed before or after optical elements
  • When drag-positioning elements, if multiple elements are

Requirements for ABCD

OS X 10.6 or later
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ABCD User Discussion

Current Version (4.x)
Downloads 284
Version Downloads 284
Date 13 Jun 2013
Platform OS X / Intel 32
Price $29.99
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