Personnel halting and stimulation response rifle

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The personnel halting and stimulation response rifle (PHASR) is a prototype non-lethal laser dazzler developed by the Air Force Research Laboratory's Directed Energy Directorate, U.S. Department of Defense.[1] Its purpose is to temporarily disorient and blind a target. Blinding laser weapons have been tested in the past, but were banned under the 1995 UN Protocol on Blinding Laser Weapons, which the United States acceded to on 21 January 2009.[2] The PHASR rifle, a low-intensity laser, is not prohibited under this regulation, as the blinding effect is intended to be temporary. It also uses a two-wavelength laser.[3] The PHASR was tested at Kirtland Air Force Base, part of the Air Force Research Laboratory Directed Energy Directorate in New Mexico.

Its name is likely derived from the fictional "Phaser" of Star Trek lore, which is known for being depicted as an easily portable directed-energy weapon which has a lethal mode and a mode that can strike living targets with non-lethal temporarily incapacitating effects; this is often accompanied by the on-screen dialogue, "Set phasers to stun."

See also[edit]


  1. ^ Eva D. Blaylock (Air Force Research Laboratory Directed Energy Directorate Public Affairs). New technology 'dazzles' aggressors, The Official Website of the U.S. Air Force, Posted November 2, 2005
  2. ^ "United Nations Office at Geneva". Retrieved 15 January 2009.
  3. ^ "Personnel Halting and Stimulation Response (PHaSR)" (PDF). Official United States Air Force Website. Air Force Research Laboratory, Office of Public Affairs. Archived from the original (PDF) on 20 September 2009. Retrieved 21 October 2018.

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