15-Gb/in.2 areal density optical disk using the DWDD medium with blue LD recording

Tetsuhiro Sakamoto; Goro Fujita; Yoshihiro Takemoto; Yuuji Akiyama; Shingo Imanishi; Katsuhisa Aratani; Masayoshi Kanno; Ariyoshi Nakaoki

doi:10.1117/12.399340

18 September 2000 15-Gb/in.² areal density optical disk using the DWDD medium with blue LD recording

Tetsuhiro Sakamoto, Goro Fujita, Yoshihiro Takemoto, Yuuji Akiyama, Shingo Imanishi, Katsuhisa Aratani, Masayoshi Kanno, Ariyoshi Nakaoki

Author Affiliations +

Proceedings Volume 4090, Optical Data Storage 2000; (2000) https://doi.org/10.1117/12.399340
Event: Optical Data Storage, 2000, Whistler, BC, Canada

Abstract

We developed a DWDD (Domain Wall Displacement Detection) medium which was applied for an optical disk system with a blue laser diode ((lambda) equals 406 nm) and an objective lens of NA equals 0.60. the layer structure of the medium was modified by taking into account the thermal characteristics of the medium during readout with blue laser. The result of jitter measurement suggested that areal density of over 15 Gbit/inch² is feasible for the DWDD media with a blue laser.

Citation Download Citation

Tetsuhiro Sakamoto, Goro Fujita, Yoshihiro Takemoto, Yuuji Akiyama, Shingo Imanishi, Katsuhisa Aratani, Masayoshi Kanno, and Ariyoshi Nakaoki "15-Gb/in.² areal density optical disk using the DWDD medium with blue LD recording", Proc. SPIE 4090, Optical Data Storage 2000, (18 September 2000); https://doi.org/10.1117/12.399340

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