Photon torpedoes were warp capable tactical matter/antimatter weapons commonly deployed aboard starships and starbases by various organizations. Photon torpedoes, often abbreviated as "photons", were called Pu'DaH dak cha in Klingonese. Photon torpedoes are used by the Alliance of Nations, Axis of Empires and the Coalition of Independent States
The components of a Federation photon torpedo were contained within an elongated elliptical casing, also known as a photon tube. The weapon was armed with a photon warhead. The warhead had a detonation chamber filled with antimatter. Upon detonation the torpedo created a matter-antimatter explosion and a flood of ion radiation.