Abstract

A small-size lightweight optical head using a holographic optical element (HOE) for optical disk systems has been developed. This optical head consists of only four optical elements. The HOE has the three optical functions required for an optical head: splitting the reflected beam; focusing error detection; and tracking error detection. A new optical configuration has been designed for this optical head to remove the influence of wavelength variation in the light source. The offset signal in the tracking error signal, which causes unstable operation, has been reduced by introduction of the holograms which are used only for detecting tracking error.

© 1988 Optical Society of America

Reflection polarizing holographic optical element for compact magnetooptical disk heads

Akitomo Ohba, Yasuo Kimura, Seizin Sugama, Ryuichi Katayama, and Yuzo Ono
Appl. Opt. 29(34) 5131-5135 (1990)

Computational analysis of a holographic optical head configuration

Naoyasu Miyagawa, Shinichi Kadowaki, Yoshikazu Hori, and Makoto Kato
Appl. Opt. 31(35) 7457-7463 (1992)

Holographic optical element for an optical disk head with spot-size detection servo optics

Yoshiaki Komma, Shin-ichi Kadowaki, Yoshikazu Hori, and Makoto Kato
Appl. Opt. 29(34) 5127-5130 (1990)

Focusing grating coupler design method using holographic optical elements

Patrick J. Cronkite and George N. Lawrence
Appl. Opt. 27(4) 679-683 (1988)

Photovoltaic concentrator using a holographic optical element

Y. W. Zhang, C. S. Ih, H. F. Yan, and M. J. Chang
Appl. Opt. 27(16) 3556-3560 (1988)