You know i am not sure about laser, but I would imagine they would have both. Prior to radar they used "pacing". Here is the link to the news article that was written up on the subject.
http://www.nbcsandiego.com/traffic/5197522/detail.html
I would imagined that they got "approval" to do this was to generate revenue. Along with the darn photo enforcements its crazy. Check this out, i was going past some construction and the road was closed as well as photo enforced!