> I'm wondering whether a discussion of holography is outside the scope of
> this mailing list.
I don't see why.  I tried to start a discussion on this a year or two ago. 
Only got one private reply back as I recall.  I would think that this
would be an interesting topic since it would be more forward looking
than retrospective. 
I recently ran across a few links on the web that might prove interesting.
Take a look at:
   http://web2.thesphere.com/SAS/SciGrps/HolographyGrps/GeorgeK/holopg.htm
Also, I recently remember reading a technical report about a group working
on a holographic printer.  I'm not too certain where I saw that.  Could
have been in EETimes magazine.  The idea as I remember was to allow for
the printing of computer generated holograms.
- Wayde
  (wallen@boulder.nist.gov)