Abstract

This paper describes magnetooptical (MO) readout and recording performance improvement that increase the MO disk drive performance. In regard to readout performance, a >60-dB readout carrier-to-noise ratio is achieved for an MO disk with a polycarbonate substrate. Also, in regard to recording performance, a new MO head is presented that achieves high optical transmission efficiency (~57%) without sacrificing the readout performance. As a result, disk rotation speed can be increased, and the data transfer rate can be improved.

© 1988 Optical Society of America

Noise sources in magnetooptic recording

Blair I. Finkelstein and W. C. Williams
Appl. Opt. 27(4) 703-709 (1988)

Influence of birefringence on the signal quality of magnetooptic disks using polycarbonate substrates

Akira Takahashi, M. Mieda, Y. Murakami, K. Ohta, and H. Yamaoka
Appl. Opt. 27(14) 2863-2866 (1988)

New magnetooptic head with a built-in generator for a bias magnetic field

Hiromichi Kobori, Teruo Murakami, and Masafumi Mori
Appl. Opt. 27(4) 698-702 (1988)

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)

Magnetooptic erasable disk memory with two optical heads

Teruo Murakami, Kozo Taira, and Masafumi Mori
Appl. Opt. 25(22) 3986-3989 (1986)