Near-field phase-change recording using a GaN laser diode

被引：10

作者：

Kishima, K ^{[1
]}

Ichimura, I ^{[1
]}

Yamamoto, K ^{[1
]}

Osato, K ^{[1
]}

Kuroda, Y ^{[1
]}

Iida, A ^{[1
]}

Saito, K ^{[1
]}

机构：

[1] Sony Corp, Home Network Co, Dev Ctr, Dev Grp 1,Shinagawa Ku, Tokyo 1410001, Japan

来源：

OPTICAL DATA STORAGE 2000 | 2000年 / 4090卷

关键词：

solid immersion lens (SIL); blue-violet laser; GaN; near-field recording; gap servo; high numerical-aperture (NA); phase-change (PC) disk; high density recording;

D O I：

10.1117/12.399331

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We developed a 1.5-Numerical-Aperture optical setup using a GaN blue-violet laser diode. We used a 1.0 mm-diameter super-hemispherical solid immersion lens (SIL), and optimized a phase-change (PC) disk structure including the cover layer by the method of MTF simulation. The disk surface was polished by tape burnishing technique. An eye-pattern of (1-7)-coded data at the linear density of 80 nm/bit was demonstrated on the phase-change disk below a 50 nm gap height, which was realized through our air-gap servo mechanism.

引用

页码：50 / 55

页数：6

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