Thank youIn theory --lasers go 'on' forever- they seem to end to our eyes but that is a illusion.
A very powerful laser was bounced off the moon from a mirror left there and detected here. ( however it could not be 'seen')
The 'easiest' to be seen or brightest is the green close to 555nm- like the 532 dpss.
Just what are you aiming at?
I have projected a laser projector on low clouds.
I DO hope that you are not doing something 'wrong' or illegal. You might be seen as a terrorist.
100 people doing nothing wrong with lasers never makes the news,,BUT one fool doing something bad WILL.
that is why in some countries no lasers are allowed--even just 5 mW.
check out LPS.org --use the link in my sig.. I go there OFTEN as new stuff is added daily.
intentionally lasing aircraft in USA is now a Federal Offence!!