Did I understand the answer [in this post][1] right, that due to not implemented volumetric lighting, such a thing as a transparent laser focus with visible molecular spheres in it, is not possible?

Right now I try to see a sphere in a red "focus" and do not get the result I would like to have.

![A sphere in a very transparent focus][2]

some properties:

![now with more information][3]


  [1]: http://blender.stackexchange.com/questions/2549/creating-volumetric-lighting-crepuscular-rays-in-cycles/2553#2553
  [2]: https://i.sstatic.net/hP53z.png
  [3]: https://i.sstatic.net/eZHWm.png