stimulated emission


stim·u·late·d emission

S5826800 (stĭm′yə-lā′tĭd)n. The emission of photons by excited electrons when photons collide with them, especially in chain reactions within lasers. The emitted photons and the triggering photons are in phase, have the same frequency and polarization, and travel in the same direction.
Translations
emissione stimolata