Re: Yo, RL. You're our laser expert....
I am about to hit the bed, and will answer in more detail tomorrow evening. .. but it depends what you mean by commercially available...
Cheap little Keychain Lasers won't do permanent harm to the retina, but take a look what "wickedlasers" (Google it) will sell you for a few hundred dollars.
The real concern is distracting or temporarily blinding a pilot during landing.
More later... I have had to spend a lot of time on this topic in the past.