Dynamical binary modulation of ultrabroadband light beams by using principal states of polarization of liquid crystal devices

In this paper, a technique is introduced, that allows precise dynamical binary amplitude modulation of beams with bandwidths exceeding a hundred of nanometers by means of LC technology. Our system provides two operation modes that allow a broadband binary amplitude modulation when the liquid crystal elements are inserted between two crossed linear polarizers. Thus, a dynamic spatial control of the light intensity can be achieved for beams with a huge spectral bandwidth of 200 nm, which benefits from the outstanding resolution of off-the-shelf TNLCDs.