5828c716   
   From: boxman@voyager.net   
      
   On 7/26/2011 10:23 AM, Helpful person wrote:   
   > I have an application that might benefit from the use of a HOE.  My   
   > main problem is identifying software capable of analyzing and   
   > controlling both the diffraction efficiency and imaging properties.   
   >   
   > To control the geometrical imagery a mathematical description of the   
   > two incoming wavefronts is ideal as long as the wavefront parameters   
   > can be entered into the design matrix as constraints.  To control   
   > diffraction efficiency an approximation (similar to that described by   
   > Kogelnik) and Bragg angle control will be fine.  For analysis a   
   > rigorous analysis of diffraction efficiency is needed.   
   >   
   > My present design software is Zemax which is adequate for most of the   
   > design work I do but does not handle holograms very well (especially   
   > diffraction efficiency and material shrinkage).   
   >   
   > Is anyone aware of available software, (including Zemax user defined   
   > surface) that may work?  If I have to write my own code the project   
   > will be too expensive.   
   >   
   > Thanks,   
   >   
   > Richard Fisher   
   > http://www.richardfisher.com   
      
   I don't know enough about diffractive optics in general to be of much   
   help, but I'm pretty sure ASAP has the capability to model what you   
   describe - not sure about how helpful it is for design.  Here's a link   
   to their technical guide for dealing with diffractive optics if that   
   helps you to figure out whether it would work for your problem.   
      
   http://www.breault.com/resources/kbasePDF/brotg0915_Diffraction.pdf   
      
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