I don't even have a Jammer yet, but I'm already thinking about how to improve performance of the LED based units (science geek). I have the technical know-how to take the signals (i.e., pulsed drive current/voltage) going to the LEDs on the Jammers/Blinders/Shifters, convert them to the necessary drive electronics for a laser diode and drive a SMALL external laser diode to guarantee JTG if the signal is right.
The LIDAR guns send out a 25mW beam and are probably expecting much less than 1mW back. The LI is a Class 1 laser so it is <1mW. As a custom add on I can use a 1, 5, 10 or 25mW laser. A single 5 or 10mW laser would be more than sufficient for jamming, but 2-3 detector heads are still recommended for detecting the signal.
I wouldn't put my eye right up to any of these laser, but without beam optics (how it would be run in this application) the beam spreads so quickly that there is no danger at all 2 feet away from the laser head.
Still, this is surely not legal to sell as a laser jamming device and there is probably some law against putting a laser on the front of your car, but there are no patent issues. Other than the ZR3, the problem with the LED based systems is lack of power. Basically this would be a way to upgrade LED systems to perform even better than the LI as long as they can detect and drive the right laser frequencies which I believe they can.