NightVisionExperts.com - 1-Million Candlepower Infrared Spotlight
Slightly off at 850 nm, but it says its greater than 850 nm, and at that kind of power it should brute force jam any LIDAR device.
If 1 million CP doesn't give you a sense of security... try 2 million! http://www.nightvisionexperts.com/IRspot2MCP.html
Here are some 940 nm spot lights:
I'm thinking of buying one of the above, and seeing if it makes a difference the next time some of guys in this area get together for testing.