An impulse laser was a handheld weapon used by Time Lords. It fired a red, flickering beam.
Hedin killed Talor with an impulse laser. He later used it to threaten Borusa. (TV: Arc of Infinity)
Irving Braxiatel later claimed that they were not much good as a weapon unless the tip of the weapon was overloaded. (AUDIO: Disassembled)
Sancreda was armed with an impulse laser during his expedition to Earth. (AUDIO: The Spectre of Lanyon Moor)
On Peladon, Arktos shot and killed Elkin with a high impulse laser. (AUDIO: The Bride of Peladon)