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Near-field optical data storage using C-apertures

Source: Appl. Phys. Lett. 97, 073111 (2010); doi:10.1063/1.3474801

Published 18 August 2010

EPAPS
KEYWORDS and PACS
Keywords
PACS
  • 42.79.Vb
    Optical storage systems, optical disks
  • 07.60.Pb
    Conventional optical microscopes
  • 07.79.Lh
    Atomic force microscopes
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef AIP
J. Brian Leen, Paul Hansen, Yao-Te Cheng, Aaron Gibby, and Lambertus Hesselink
Department of Applied Physics, Stanford University, 420 via Palou Mall, Stanford, California 94305, USA
We demonstrate the all-optical recording of deeply subwavelength data bits in Ge2Sb2Te5 using a near-field scanning optical microscope (NSOM) probe that utilizes a C-aperture fabricated using through membrane focused ion beam milling. Data bits recorded with various optical powers were read out optically by C-aperture NSOM and the physical bit size was measured by atomic force microscopy (AFM). Both optical and AFM measurements were found to be in excellent agreement with simulation. We achieved a minimum physical bit size of 53.5×50.2  nm2 at a wavelength of 980 nm (lambda/20) indicating a data density of 223  Gbit/in.2. ©2010 American Institute of Physics
History: Received 23 May 2010; accepted 29 June 2010; published 18 August 2010
Permalink: http://link.aip.org/link/?APPLAB/97/073111/1

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