释义 |
traveling-wave phototube traveling-wave phototube[′trav·əl·iŋ ¦wāv ′fōd·ə‚tüb] (electronics) A traveling-wave tube having a photocathode and an appropriate window to admit a modulated laser beam; the modulated laser beam causes emission of a current-modulated photoelectron beam, which in turn is accelerated by an electron gun and directed into the helical slow-wave structure of the tube. |