APPARATUS FOR PROCESSING OPTICAL INFORMATION, METHOD FOR PROCESSING OPTICAL INFORMATION, SPATIAL LIGHT MODULATOR AND METHOD OF MODULATION BEAM USING THE SAME

摘要

An apparatus and a method for processing optical information, a spatial light modulator and a light modulation method using the same are provided to remove a hot spot by loading data on light using a spatial light modulator and modulating the phase of the light at the same time, thereby increasing play efficiency of the light. An apparatus for processing optical information comprises a light source(110), a separation optical system(130), a light converging optical system(150), and a light detector(170). The separation optical system loads input data on the light through on/off of a liquid crystal cell, controls a reflection position of the light passing through the liquid crystal cell, modulates the phase of the light, and divides the light into reference light and signal light. The separation optical system has a spatial light modulator(200) which includes a light phase modulating layer(230), a spatial light modulating layer(250), and a control part.