Optical pickup using a blue-green laser diode to read a high-density disk

Naoya Eguchi; Akira Ishibashi

doi:10.1117/12.280683

30 July 1997 Optical pickup using a blue-green laser diode to read a high-density disk

Naoya Eguchi, Akira Ishibashi

Proceedings Volume 3109, Optical Data Storage 1997 Topical Meeting; (1997) https://doi.org/10.1117/12.280683
Event: Optical Data Storage Topical Meeting '97, 1997, Tucson, AZ, United States

Abstract

We have realized the readout of optical disks with a 7.7 GB capacity (a track pitch of 0.58 micrometers and a minimum mark length of 0.31 micrometers ) using a ZnMgSSe laser diode and an objective lens with a numerical aperture of 0.6. We employed high-frequency modulation of 300 MHz for the ZnMgSSe laser diode drive circuit to minimize feedback noise. Measured jitter was 9.2% of a channel bit.

Citation Download Citation

Naoya Eguchi and Akira Ishibashi "Optical pickup using a blue-green laser diode to read a high-density disk", Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); https://doi.org/10.1117/12.280683

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