DETECTOR OF ULTRA-FAST OPTICAL SIGNALS

摘要

The invention relates to a detector of ultra-fast and/or low intensity optical signals comprising a photo cathode (1) that converts the photons of incoming ultra-fast optical signals into electrons, a focusing zone (13) comprising focusing electrodes (2) that focus said electrons, a deflection zone (3) comprising a transverse electric field produced by deflection electrodes (5) that deviate said electrons from the axis (4) perpendicular to the photocathode (1), a means for slowing down said electrons and a sampling zone (12) comprising a sampling slit (6) and an electron multiplier (7) having a first dynode (8) and an electron-collecting anode (10). According to the invention, the means for slowing down said electrons consists of an elongate electron deceleration zone (11).