BEAM SEARCH SYSTEM FOR ANGLE MULTIPLEXING OF HOLOGRAPHIC OPTICAL MEMORY

摘要

PURPOSE: A beam search system for angle multiplexing of a holographic optical memory is provided to configure a control window for determining an angle as an LCD, to simply control the LCD by a PC, and to move the LCD to an optional area at the same speed, to randomly designate an address, thereby realizing miniaturization by a shorter focal distance. CONSTITUTION: An LCD control window(110) inputs a reference beam of X-axis/Y-axis directions, is vertically/horizontally controlled by a PC, and determines an angle of the reference beam. A micro-lens array(120) is mounted on a rear side of the LCD control window(110), is formed to have the same area as an open area of the LCD control window(110), and determines a beam size. An L2 lens(130) forms a parallel beam in a rear part such that the beam passing through the micro-lens array(120) can be incident on a crystal, and determines a size of the beam.