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Numerical Analysis of Nano-Aperture Light Source for High-Density Optical Data Storage |
| XU Ji-Ying;WANG Jia;TIAN Qian;WANG Bo-Xiong |
| State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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XU Ji-Ying, WANG Jia, TIAN Qian et al 2007 Chin. Phys. Lett. 24 2105-2107 |
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Abstract Two unconventional nano-aperture light sources, an L-shaped nano-aperture source and a 3D nano-aperture source for high-density optical data storage, are numerically investigated. With incidence of a Gaussian beam, the spot size of the Poynting vector coupled into the recording medium is 130×175nm2 for the L-aperture and 120×135nm2 for the 3D nano-aperture. The quantitative analyses indicate that the unconventional nano-aperture sources can provide enough power density to record marks in the commercial recording medium. It is feasible to use a laser diode with a nano-aperture as an active nanometer light source for high-density optical data storage.
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| Keywords:
78.67.-n
42.79.Ag
42.79.Vb
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Received: 11 January 2007
Published: 25 June 2007
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| PACS: |
78.67.-n
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(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
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42.79.Ag
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(Apertures, collimators)
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42.79.Vb
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(Optical storage systems, optical disks)
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