Two-dimensional finite-difference time-domain simulation for rewritable optical disk surface structure design

被引：34

作者：

Judkins, JB

Haggans, CW

Ziolkowski, RW

机构：

[1] UNIV ARIZONA,DEPT ELECT & COMP ENGN,ELECTROMAGNET LAB,TUCSON,AZ 85721

[2] 3M CO,REWRITABLE OPT LAB,VADNAIS HTS,MN 55110

来源：

APPLIED OPTICS | 1996年 / 35卷 / 14期

关键词：

optical disk; compact disk; tracking signals; push-pull; finite-difference time domain; focused beams; gratings; multilayer;

D O I：

10.1364/AO.35.002477

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel two-dimensional finite-difference time-domain simulation for treating the interaction of a focused beam with a rewritable optical disk is detailed and experimentally validated. In this simulation, the real material properties of the rewritable multilayer stack and the aperiodic nature of the disk: topography are considered. Excellent agreement is obtained between calculated and measured push-pull tracking servosignals for magneto-optical disks with pregrooves and infinite-length preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-mu m track pitch, continuous, composite servoformat magneto-optical disk is given. (C) 1996 Optical Society of America

引用

页码：2477 / 2487

页数：11

共 20 条

[11] MULTILAYER-COATED DIFFRACTION GRATINGS - DIFFERENTIAL METHOD OF CHANDEZON ET-AL REVISITED [J].