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Near-field optical data storage using C-apertures
- Source :
- Applied Physics Letters. 97:073111
- Publication Year :
- 2010
- Publisher :
- AIP Publishing, 2010.
-
Abstract
- 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 (λ/20) indicating a data density of 223 Gbit/in.2.
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........6b914256acc63ae5d78b81f4724fc155
- Full Text :
- https://doi.org/10.1063/1.3474801