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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 13 — May. 1, 2004
  • pp: 2722–2729

Effective spherical aberration compensation by use of a nematic liquid-crystal device

Somakanthan Somalingam, Karsten Dressbach, Mathias Hain, Svetomir Stankovic, Theo Tschudi, Joachim Knittel, and Hartmut Richter  »View Author Affiliations


Applied Optics, Vol. 43, Issue 13, pp. 2722-2729 (2004)
http://dx.doi.org/10.1364/AO.43.002722


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Abstract

The next generation of optical data storage system beyond DVDs will use blue laser light and an objective lens with a high numerical aperture of 0.85 to increase storage capacity. Such high numerical aperture systems have an inherent higher sensitivity to aberrations. In particular, the spherical aberration caused by cover layer thickness tolerances and—more obvious—by dual-layer disks with a typical separation of approximately 20 μm between the two layers must be compensated. We propose a novel transmissive nematic liquid-crystal device, which is capable of compensating spherical aberration that occurs during the operation of optical pickup systems.

© 2004 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(160.3710) Materials : Liquid crystals
(210.4590) Optical data storage : Optical disks
(220.1000) Optical design and fabrication : Aberration compensation
(230.3720) Optical devices : Liquid-crystal devices
(230.4110) Optical devices : Modulators

History
Original Manuscript: April 30, 2003
Revised Manuscript: December 12, 2003
Published: May 1, 2004

Citation
Somakanthan Somalingam, Karsten Dressbach, Mathias Hain, Svetomir Stankovic, Theo Tschudi, Joachim Knittel, and Hartmut Richter, "Effective spherical aberration compensation by use of a nematic liquid-crystal device," Appl. Opt. 43, 2722-2729 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-13-2722

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