Note: high capacity digital laser beam steering system

Rev Sci Instrum. 2011 Nov;82(11):116101. doi: 10.1063/1.3659949.

Abstract

The combination of liquid crystal cells with polarizing cube beam splitters has been used to direct a beam of light to multiple directions. The polarization at each beam splitter is controlled by applying a signal to a corresponding liquid crystal cell. Ten cascaded stages have deflected a HeNe laser beam to 1024 digitally selectable angles.