Prototype PHASR weapon tested by the US military. (Late 2005)
The Personnel Halting and Stimulation Response device is under development at the Air Force Research Laboratory's Directed Energy Directorate.
(PHASR on stun)
The PHASR has been designed as a non-lethal, man-portable deterrent weapon. It uses a laser system with two different wavelengths to blind (temporarily!) the enemy.
Laser weapons that could blind were banned under a 1995 UN convention - the Protocol on Blinding Laser Weapons. The PHASR is intended to dazzle an enemy; it is also being fitted with a range-finding device to make sure that the amount of energy received is not too bright.
http://en.wikipedia.org/wiki/Personnel_Halting_and_Stimulation_Response_rifle