You are never, ever going to prevent the criminally insane from getting access to lasers. There are lasers in so many different products with legitimate uses, and millions in 'circulation'. The answer is to prevent them from causing harm.
Laser light is coherent, collimated and monochromatic. There must be a technical solution. Goggles, maybe, but maybe a distraction on (statistically) the most dangerous phase of flight which is the time the pilots are most at risk due to attitude. Maybe a coating, or a screen that can be pulled down when lasers could be a risk, and easy to release if they are causing a problem with vision?
Welding goggles work very well - adapt that for a pull-down screen?
Just forget trying to stop or catch the criminals....it's a waste of time and effort.