http://www.htpow.com/high-powered-30000mw-blue-laserpointer-445nm-worlds-brightest-p-1027.html

They don't state the wavelength in the article, but since they say laser and not maser or IR laser.I don't think I want to deal with water cooling. I don't mind having to set up the laser on a tripod and do some aiming with a scope.Today, lasers are used for purposes ranging from measurement to reading encoded data, and there are several ways to make a laser, depending on your budget and skills.

http://www.htpow.com/300mw-green-high-power-laser-pointer-waterproof-adjustable-holster-p-1038.html