Light modulation method using electrically charged particles, causing particles move back-and-forth between electrodes providing granular gas through which light is passed

摘要

The intensity of input light beam (I0) is modified using electrically charged particles within a gas or vacuum, contained between at least 2 electrodes coupled to a voltage (U1). A granular gas (6) is produced using the vacuum or gas between the electrodes. The charged particles move back-and-forth between the electrodes, modulating the light passing through the granular gas to provide a modulated output light beam (I1). An Independent claim for a light modulation device is also included.