1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage
We demonstrate high-density, multi-level crystallization of a Ge2Sb2Te5 thin film using tightly focused femtosecond laser pulses. The submicron spots with 8 distinct data storage states are written on a 1.08 μm square grid. The significant change in reflectivity of every specific state of crystalliz...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/103927 http://hdl.handle.net/10220/19381 |
| _version_ | 1826115978777329664 |
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| author | Craig, Chris Zheludev, Nikolay I. MacDonald, K. F. Wang, Q. Maddock, J. Rogers, E. T. F. Roy, T. Hewak, D. W. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Craig, Chris Zheludev, Nikolay I. MacDonald, K. F. Wang, Q. Maddock, J. Rogers, E. T. F. Roy, T. Hewak, D. W. |
| author_sort | Craig, Chris |
| collection | NTU |
| description | We demonstrate high-density, multi-level crystallization of a Ge2Sb2Te5 thin film using tightly focused femtosecond laser pulses. The submicron spots with 8 distinct data storage states are written on a 1.08 μm square grid. The significant change in reflectivity of every specific state of crystallized spot allows easy optical reading and identification. As a demonstration, two gray-scale images are written into the storage medium. Our results open up potential applications in ultra-fast two-dimensional parallel cognitive computing and holography. |
| first_indexed | 2024-10-01T04:03:54Z |
| format | Journal Article |
| id | ntu-10356/103927 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:03:54Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1039272023-02-28T19:43:03Z 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage Craig, Chris Zheludev, Nikolay I. MacDonald, K. F. Wang, Q. Maddock, J. Rogers, E. T. F. Roy, T. Hewak, D. W. School of Physical and Mathematical Sciences DRNTU::Science::Physics We demonstrate high-density, multi-level crystallization of a Ge2Sb2Te5 thin film using tightly focused femtosecond laser pulses. The submicron spots with 8 distinct data storage states are written on a 1.08 μm square grid. The significant change in reflectivity of every specific state of crystallized spot allows easy optical reading and identification. As a demonstration, two gray-scale images are written into the storage medium. Our results open up potential applications in ultra-fast two-dimensional parallel cognitive computing and holography. ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version 2014-05-20T02:36:22Z 2019-12-06T21:23:16Z 2014-05-20T02:36:22Z 2019-12-06T21:23:16Z 2014 2014 Journal Article Wang, Q., Maddock, J., Rogers, E. T. F., Roy, T., Craig, C., Macdonald, K. F., et al. (2014). 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage. Applied Physics Letters, 104(12), 121105-. 0003-6951 https://hdl.handle.net/10356/103927 http://hdl.handle.net/10220/19381 10.1063/1.4869575 en Applied physics letters © 2014 AIP Publishing LLC. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: http://dx.doi.org/10.1063/1.4869575. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Science::Physics Craig, Chris Zheludev, Nikolay I. MacDonald, K. F. Wang, Q. Maddock, J. Rogers, E. T. F. Roy, T. Hewak, D. W. 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title | 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title_full | 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title_fullStr | 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title_full_unstemmed | 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title_short | 1.7 Gbit/in.2 gray-scale continuous-phase-change femtosecond image storage |
| title_sort | 1 7 gbit in 2 gray scale continuous phase change femtosecond image storage |
| topic | DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/103927 http://hdl.handle.net/10220/19381 |
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