A little while ago I used to fly this exact aircraft. There is a safety shutoff on the sensor within the plane which is usually over sensitive, if something below it is triggered within a set distance the shutoff comes on and then the laser is inoperative. A lot of care is taken by the crew in the event that another aircraft comes within a closer distance they switch off the system early.
There is no need to worry about the lasers from the aircraft as you will never be close enough to actually risk eye damage. The notam is there to protect everyone as we all know that we are meant to read them and take them into consideration in our flight planning.