Design of Super-resolution Filters with a Gaussian Beam in Optical Data Storage Systems |
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| Authors: | WANG Sha-Sha ZHAO Xiao-Feng LI Cheng-Fang RUAN Hao |
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| Affiliation: | Department of Physics, Wuhan University, Wuhan 430072Section 202, Xi'an Research Institute of Hi-Tech, Xi'an 710025Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800 |
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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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