Optical design of a single-sided microholographic data-storage system using a diffractive optical element and a blue laser

Sang Hyuck Lee, No Cheol Park, Hyunseok Yang, Kyoung Su Park, Young Pil Park

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We introduce a compact optical design for a single-sided microholographic data-storage system, using a diffractive optical element (DOE) and a blue laser diode. The diffractive optical element is used to separate the disc-focusing servo beam from the reference beam in a single optical path to create a compact optical system. In conventional systems, three beam paths are generally required for the reference beam, signal beam and disc-focusing beam. Our design employs a single optical path for all three beams, utilizing a DOE. The total capacity of a 12cm disc with a medium thickness of 400 μm is 1.09 terabytes, using a blue laser and an objective lens with a numerical aperture of 0.85. Optical aberrations are suppressed below 0.01λrms on all layers (47layers) and the disc tilt margin is calculated based on tilt compensation by the objective lens. The final design has a disc tilt margin of ±0.1° and thus can endure very severe disc tilt.

Original languageEnglish
Article number055403
JournalJournal of Optics
Volume13
Issue number5
DOIs
Publication statusPublished - 2011 May 1

Fingerprint

Diffractive optical elements
Optical design
data storage
Data storage equipment
Lasers
Lenses
lasers
Aberrations
Optical systems
Semiconductor lasers
optical paths
margins
lenses
numerical aperture
aberration
semiconductor lasers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

@article{10308681226d4f8c9893d3ebfb144631,
title = "Optical design of a single-sided microholographic data-storage system using a diffractive optical element and a blue laser",
abstract = "We introduce a compact optical design for a single-sided microholographic data-storage system, using a diffractive optical element (DOE) and a blue laser diode. The diffractive optical element is used to separate the disc-focusing servo beam from the reference beam in a single optical path to create a compact optical system. In conventional systems, three beam paths are generally required for the reference beam, signal beam and disc-focusing beam. Our design employs a single optical path for all three beams, utilizing a DOE. The total capacity of a 12cm disc with a medium thickness of 400 μm is 1.09 terabytes, using a blue laser and an objective lens with a numerical aperture of 0.85. Optical aberrations are suppressed below 0.01λrms on all layers (47layers) and the disc tilt margin is calculated based on tilt compensation by the objective lens. The final design has a disc tilt margin of ±0.1° and thus can endure very severe disc tilt.",
author = "Lee, {Sang Hyuck} and Park, {No Cheol} and Hyunseok Yang and Park, {Kyoung Su} and Park, {Young Pil}",
year = "2011",
month = "5",
day = "1",
doi = "10.1088/2040-8978/13/5/055403",
language = "English",
volume = "13",
journal = "Journal of Optics",
issn = "2040-8978",
publisher = "IOP Publishing Ltd.",
number = "5",

}

Optical design of a single-sided microholographic data-storage system using a diffractive optical element and a blue laser. / Lee, Sang Hyuck; Park, No Cheol; Yang, Hyunseok; Park, Kyoung Su; Park, Young Pil.

In: Journal of Optics, Vol. 13, No. 5, 055403, 01.05.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optical design of a single-sided microholographic data-storage system using a diffractive optical element and a blue laser

AU - Lee, Sang Hyuck

AU - Park, No Cheol

AU - Yang, Hyunseok

AU - Park, Kyoung Su

AU - Park, Young Pil

PY - 2011/5/1

Y1 - 2011/5/1

N2 - We introduce a compact optical design for a single-sided microholographic data-storage system, using a diffractive optical element (DOE) and a blue laser diode. The diffractive optical element is used to separate the disc-focusing servo beam from the reference beam in a single optical path to create a compact optical system. In conventional systems, three beam paths are generally required for the reference beam, signal beam and disc-focusing beam. Our design employs a single optical path for all three beams, utilizing a DOE. The total capacity of a 12cm disc with a medium thickness of 400 μm is 1.09 terabytes, using a blue laser and an objective lens with a numerical aperture of 0.85. Optical aberrations are suppressed below 0.01λrms on all layers (47layers) and the disc tilt margin is calculated based on tilt compensation by the objective lens. The final design has a disc tilt margin of ±0.1° and thus can endure very severe disc tilt.

AB - We introduce a compact optical design for a single-sided microholographic data-storage system, using a diffractive optical element (DOE) and a blue laser diode. The diffractive optical element is used to separate the disc-focusing servo beam from the reference beam in a single optical path to create a compact optical system. In conventional systems, three beam paths are generally required for the reference beam, signal beam and disc-focusing beam. Our design employs a single optical path for all three beams, utilizing a DOE. The total capacity of a 12cm disc with a medium thickness of 400 μm is 1.09 terabytes, using a blue laser and an objective lens with a numerical aperture of 0.85. Optical aberrations are suppressed below 0.01λrms on all layers (47layers) and the disc tilt margin is calculated based on tilt compensation by the objective lens. The final design has a disc tilt margin of ±0.1° and thus can endure very severe disc tilt.

UR - http://www.scopus.com/inward/record.url?scp=79955838863&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955838863&partnerID=8YFLogxK

U2 - 10.1088/2040-8978/13/5/055403

DO - 10.1088/2040-8978/13/5/055403

M3 - Article

AN - SCOPUS:79955838863

VL - 13

JO - Journal of Optics

JF - Journal of Optics

SN - 2040-8978

IS - 5

M1 - 055403

ER -