A directed energy weapon is a device which, in the form of a gun or other type of weapon, fire a beam, pulse or projectile made of, or charged with, high-energy particles or other energies. Most spacefaring species have the technology to fire directed energy, as it is preferable to firing projectile weapons in pressurized environments, and more effective against shielded components or personnel.
There are a wide array of methods available for dispensing such a discharge, from plasma weapons, lasers and phase weapons to modern Starfleet's phaser weapon, which fires phasing particles called nadions. Another common energy discharge weapon is the disruptor, used by Klingons and Romulans. Compressed tetryon beams are used by other Alpha Quadrant civilizations. (TOS; TNG; DS9; ENT)
Subspace weapons of directed energy, including isolytic bursts, are generally forbidden by treaties, such as the Khitomer Accords. (Star Trek: Insurrection)
Advanced weapons exist, in the forms of the planet-destroying antiproton beam mounted on the so-called "doomsday machine." Federation technology had very little to match when faced with one in 2267. The Xindi superweapon plan was another planet-killer that was aborted before the Sphere Builders, manipulating the Xindi, had an opportunity to complete their plan by using the device on Earth. (ENT Season 3)
Directed energy weapons
Ship-mounted
- antiproton beam
- disruptor
- forced plasma beam
- heavy graviton beam
- energy dampening weapon
- Galor-class plasma bank
- high-energy X-ray laser
- high yield particle weapon
- isolytic burst (and other subspace weapons)
- phase cannon
- phased polaron beam
- phaser
- plasma spread
- proton beam
- pulse phaser cannon
- quantum resonance charge
- subatomic disruptor
Planet-based
Hand-held
- compressed tetryon beam
- CRM 114
- disruptor rifle
- energy whip
- laser
- phase pistol
- phasers
- phase compression rifle
- thoron rifle
- Varon-T disruptor