Three-dimensional optical storage inside transparent materials

被引：981

作者：

Glezer, EN ^{[1
]}

Milosavljevic, M ^{[1
]}

Huang, L ^{[1
]}

Finlay, RJ ^{[1
]}

Her, TH ^{[1
]}

Callan, JP ^{[1
]}

Mazur, E ^{[1
]}

机构：

[1] HARVARD UNIV,DEPT PHYS,CAMBRIDGE,MA 02138

来源：

OPTICS LETTERS | 1996年 / 21卷 / 24期

关键词：

D O I：

10.1364/OL.21.002023

中图分类号：

O43 [光学];

学科分类号：

070207 [光学]; 0803 [光学工程];

摘要：

We present a novel method for three-dimensional optical data storage that has submicrometer size resolution, provides a large contrast in index of refraction, and is applicable to a wide range of transparent materials. Bits are recorded by use of a 0.65-N.A objective to focus 100-fs laser pulses inside the material. The laser pulse produces a submicrometer-diameter structurally altered region with high contrast in index of refraction. We record binary information by writing such bits in multiple planes and read it out with a microscope objective with a short depth of field. We demonstrate data storage and retrieval with 2-mu m in-plane bit spacing and 15-mu m interplane spacing (17 Gbits/cm(3)). Scanning electron microscopy and atomic force microscopy show structural changes confined to an area 200 nn in diameter. (C) 1996 Optical Society of America.

引用

页码：2023 / 2025

页数：3

共 10 条

[1]

LASER-INDUCED BREAKDOWN BY IMPACT IONIZATION IN SIO2 WITH PULSE WIDTHS FROM 7 NS TO 150 FS [J].