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

Justin B. Judkins; Charles W. Haggans; Richard W. Ziolkowski

doi:10.1364/AO.35.002477

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

Justin B. Judkins, Charles W. Haggans, Richard W. Ziolkowski

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

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 infinitelength preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-ìm track pitch, continuous, composite servoformat magneto-optical disk is given.

Original language	English (US)
Pages (from-to)	2477-2487
Number of pages	11
Journal	Applied optics
Volume	35
Issue number	14
DOIs	https://doi.org/10.1364/AO.35.002477
State	Published - May 10 1996

Keywords

Compact disk
Finite-difference time domain
Focused beams
Gratings
Multilayer
Optical disk
Push–pull
Tracking signals

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.35.002477

Cite this

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title = "Two-dimensional finite-difference time-domain simulation for rewritable optical disk surface structure design",

abstract = "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 infinitelength preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-{\`i}m track pitch, continuous, composite servoformat magneto-optical disk is given.",

keywords = "Compact disk, Finite-difference time domain, Focused beams, Gratings, Multilayer, Optical disk, Push–pull, Tracking signals",

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year = "1996",

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AU - Judkins, Justin B.

AU - Haggans, Charles W.

AU - Ziolkowski, Richard W.

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N2 - 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 infinitelength preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-ìm track pitch, continuous, composite servoformat magneto-optical disk is given.

AB - 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 infinitelength preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-ìm track pitch, continuous, composite servoformat magneto-optical disk is given.

KW - Compact disk

KW - Finite-difference time domain

KW - Focused beams

KW - Gratings

KW - Multilayer

KW - Optical disk

KW - Push–pull

KW - Tracking signals

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

Abstract

Keywords

ASJC Scopus subject areas

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