From: pcdhSpamMeSenseless@electrooptical.net   
      
   On 9/18/2013 8:36 PM, parryjoh   
   nson@gmail.com wrote:   
    > On Monday, October 1, 2001 2:30:37 AM UTC-7, Sven Voigt wrote:   
    >> Hello world!   
   >>   
   >> I am trying to design an optical system that uses a VCSEL array as   
   >> light source.  As I am yet very new to ZEMAX I couldn't find an   
   >> apporpriate way of simulating VCSELs. The problem is their flat   
   >> extension with a given cone angle.   
   >>   
   >> Having tried the field feature and NSC, nothing satisfied our needs.   
   >> The NSC Source Ellipse in particular has no angle limitation.   
   >>   
   >> If anybody could please hint me to any web source or show up with a   
   >> ZEMAX solution, I'd be very thankful! :-)   
   >>   
      
      
    > Hi Sven,   
    >   
    > I do this two ways: 1) Non-sequential mode, and 2)sequential mode. I   
   think you want to consider non-sequential.   
    >   
    > 1) For non-sequential mode: I do this trick... that is not perfect   
   but close enough. I use the "source diode" and let the VCSEL be   
   described as an array of square emitters without astigmatism. Input the   
   FWHM per the ZEMAX manual... this works well.   
    >   
    > 2) For sequential mode: I solve for the embedded gaussian beam and   
   M^2 per Siegman to get the basic propagation characteristics.   
    >   
    > 1) is better for imaging etc. you can see the array on the detector.   
    > 2) is better for propagating the total beam as a single beam... IE.   
   for free-space illumination.   
    >   
    > Regards and greetings from Seattle...   
    >   
    > Parry Johnson   
      
   Hi, Parry,   
      
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