[Bf-cycles] Zero-Angled Spotlight?

[Zauber Paracelsus]

Would it be possible to change the minimum angle width of a spotlight 
from one degree to zero?  I was tinkering with a scene filled with mist, 
and wanted to create the effect of laser lights transmitting through 
mist, which would scatter their light and make the beam visible.  The 
closest light I could think of that would produce the effect was a 
spotlight, but due to its minimum angle width of 1 degree, I am not sure 
if I can accomplish the effect.