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Design of Super-resolution Filters with a Gaussian Beam in Optical Data Storage Systems |
| WANG Sha-Sha1;ZHAO Xiao-Feng2;LI Cheng-Fang1;RUAN Hao3 |
| 1Department of Physics, Wuhan University, Wuhan 4300722Section 202, Xi'an Research Institute of Hi-Tech, Xi'an 7100253Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800 |
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| Cite this article: |
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WANG Sha-Sha, ZHAO Xiao-Feng, LI Cheng-Fang et al 2008 Chin. Phys. Lett. 25 938-941 |
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Abstract Super-resolution filters based on a Gaussian beam are proposed to reduce the focusing spot in optical data storage systems. Both of amplitude filters and pure-phase filters are designed respectively to gain the desired intensity
distributions. Their performances are analysed and compared with those based on plane wave in detail. The energy utilizations are presented. The simulation results show that our designed super-resolution filters are favourable for use in optical data storage systems in terms of performance and energy utilization.
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| Keywords:
42.25.Fx
42.30.Lr
42.79.Ci
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Received: 03 December 2007
Published: 27 February 2008
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| PACS: |
42.25.Fx
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(Diffraction and scattering)
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42.30.Lr
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(Modulation and optical transfer functions)
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42.79.Ci
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(Filters, zone plates, and polarizers)
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[8] Born M and Wolf E 1975 Principles of Optics (NewYork: Pergamon)
[9] Luo H X and Zhou C H 2004 Appl. Opt. 43 6246 |
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