Multi-bits coding by multi-directional valley pits permitting stamper mass-production and remote direction readout by polarization reflection
Optics Express, Vol. 16, Issue 13, pp. 9622-9627 (2008)
http://dx.doi.org/10.1364/OE.16.009622
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Abstract
A new concept of high-density memories by arrays of multidirectional V-shape pits and remote polarization readout is proposed. The polarization readout principles are examined by two model experiments. The first experiment with an array of 1 µm deep V-pits fabricated by FIB on a Si wafer, carried out under polarization microscope observation, confirmed the concept by the expected contrast variation among the pits images. Accuracy of the remote readout was examined by the second experiment configuring total reflection V-pits by a rectangular prism glued underneath a glass plate. Polarization detection sensitivity of the V-pit direction was found to be ±0.14°, which should easily accommodate 1.4°=180°/128 separation for 7 bits recording at every single V-pit.
© 2008 Optical Society of America
OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(210.4590) Optical data storage : Optical disks
(210.1635) Optical data storage : Coding for optical storage
ToC Category:
Optical Data Storage
History
Original Manuscript: May 12, 2008
Revised Manuscript: June 6, 2008
Manuscript Accepted: June 7, 2008
Published: June 13, 2008
Citation
Toshihide Tsuru and Masaki Yamamoto, "Multi-bits coding by multi-directional valley pits permitting stamper mass-production and remote direction readout by polarization reflection," Opt. Express 16, 9622-9627 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-13-9622
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