Develop a system to differentiate laser pointers from the ambient light based on the information collected by two arrays of digital FPA detectors
I think you could likely make as effective a laser-pointer detection using a less "high-tech" approach, simply by detecting the "nearly collimated" beam pattern of a laser.

If you trade out your high-tech (and price) sensor arrrays for simpler detector 'screens' that simply register basic intensity &amp; peak color on each pixel; then there will be incredibly few non-laser light sources that will project onto nearly identically sized small areas of any 2 screens with more than a few mm of separation between them.

I.E. Shining even a "tightly focused" LED "flashlight" onto 2 screens spaced 40mm apart will either produce a significantly larger "bright spot" on the further screen than on the nearer one, or will simply illuminate the entirety of both screens. Meanwhile, a laser 'beam' striking either screen will project nearly an identical 'spot' on both screens, so any "spot" that appears at similar size &amp; brightness on both screens is &lt;95% likely to be from a laser source (or at least a very expensive imitation of a laser, producing a similarly collimated [and destructive] output).