Abstract

One of the advantages of the optical head using HOE (Holographic Optical Element) is that various optical layouts and servo signal detecting schemes are available in a small package[1],[2]. In this paper we will present a new holographic optical head with two-segmented HOE which can generate astigmatic focus error signal and push-pull radial error signal. Design process and simulation result of the focus and radial error signal will be described. The optical head was tested on a CD player and produced a good eye pattern with 3T-jitter less than 40 ns.

© 1994 Optical Society of America