I just found this Thread, interesting you guys are being Positive & getting motivated & trying to devise DIY Jammer systems. So many just want to get paid for testing them in US GOL RD etc.
It has to be said that considering the component cost of LI Laser Star whichever, running at $8-$10 they are grossly overpriced. I have done plenty of experiments and made many circuits. Some had very good range around 15+ Yards were triggering Laser Alerts, and would for Hours. That was an important step. It won't let me put the Url in to show you guys.
Some did give wacky Jam readings on guns -10Km/h etc, but earlier models probably were low on Grunt. That's sorted now. One had X4 high Gain Amplifiers and Pulsed 100 m/Amp led's at over double their 1.4Volt rating. To anticipate your next Question, no none fried even though emitters on all the time with Ignition. The fabled Lidatek LE-10 was a pure brute force Oscillator Laser Jammer and will still jam anything, interesting food for thought.
Anyone trying a Jammer must take a look at a Lidar Pulse, it's very low and high Amplitude, and this must be either imitated and returned (a'La LI L-Star , or obscured entirety, either method if done well=No reading.
In an effort to demystify LIDAR i posted a Video of an Amplified LIDAR wave-Signal. https://www.youtube.com/watch?v=vmYia-pzvMY
Now I use the Osram Laser Diodes 25W and somewhat Overpowered 70W (90Watt Max) as used on the ALP. See my You Tube Radtechdefence Britain. also DIY page with a few pointers. radar-laser-jammers dot net