What are the airplane high-intensity white lights called?

I been observing airplanes taking off at night on an airport that is approximately a 30 minute drive east of where I live with high-intensity white lights while they ascend to their specify altitude. I want to know what are the high-intensity white lights called and where I can get more information about them. The airplanes that I have seen taking off from the airport look like Boeing 737 or MD-83 but I can't be certain because they already are high enough to really tell the difference.