Destructo beam
The destructo beam was a fictional weapon within The Adventures of Captain Proton holoprogram. Captain Proton's rocket ship was equipped with one. 

When the  was under attack by photonic lifeforms seeking to destroy Doctor Chaotica, Tom Paris used the destructo beam to destroy the death ray at Chaotica's Fortress of Doom. ()

de: Destruktorstrahl
The Adventures of Captain Proton
Fictional weapons