SP UV laser

Hi!
I know next to nothing about SP, but my question is: if you have such a need 
for UV sources and lasers are not cutting it, what is the real impediment to 
use lamps like microscopes do? If i'm correct microscopes are less efficient 
than a flow cytometer, thus if i can see the samples OK on a microscope then 
the excititation intensity must be enough for the flow cytometer. Is it only 
machine design or is there something else behind the lack of use of lamps?

Uriel.

Uriel Trahtemberg
MD/PhD student
The Laboratory for Cellular and Molecular Immunology
The Hebrew University - Hadassah Medical Organization
Jerusalem - ISRAEL

"God does not care about our mathematical difficulties. He integrates 
empirically."
 Albert Einstein