Abstract

The control method for the angle servo of reference beam during reading recoded data images of a holographic data storage system is presented. The recording scheme with track offset is adopted in other to implement the proposed angle servo. Using only recorded data tracks the system generates the angle error signal of reference beam and implements the angle servo. Experiments have been performed on recording and reading data images to compensate angle Bragg mismatch.

© 2007 Optical Society of America