| 具有超小光斑点和高通光效率的AlGaAs 四面锥尖的模拟和优化 |
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| 引用本文： | 王晓秋,吴世法,简国树,潘石.具有超小光斑点和高通光效率的AlGaAs 四面锥尖的模拟和优化[J].中国物理 B,2005,14(1):133-136. |
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| 作者姓名： | 王晓秋 吴世法 简国树 潘石 |
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| 作者单位： | Department of Physics, Dalian University of Technology,Dalian,116024, China;Department of Physics, Dalian University, Dalian,116622, China;Department of Physics, Dalian University of Technology,Dalian,116024, China;Department of Physics, Dalian University of Technology,Dalian,116024, China;Department of Physics, Dalian University of Technology,Dalian,116024, China |
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| 基金项目： | Project supported by the National Science Foundation of China (Grant No 30270367). |
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| 摘 要： | 本文我们利用时域有限差分方法研究和比较了四种类型探针的光发射斑点和通光效率，在这些探针中，全镀薄金属银膜的AlGaAs 四面锥尖可提供最高的通光效率和单个近场光斑点。探针镀有3 nm银膜并利用波长800 nm入射光照射是提供高通光效率和超小光斑点的优化条件，高通光效率和超小光斑点的光探针使我们能实现超高密度光存储。
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| 关 键 词： | 近场光存储 超小光斑点 通光效率 AlGaAs 四面锥尖 时域有限差分方法(FDTD) |
| 收稿时间： | 2003-12-16 |
Simulation and optimization of pyramidal AlGaAs probe with ultra-small spot size and high throughput |
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| Wang Xiao-Qiu,Wu Shi-F,Jian Guo-Shu and Pan Shi.Simulation and optimization of pyramidal AlGaAs probe with ultra-small spot size and high throughput[J].Chinese Physics B,2005,14(1):133-136. |
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| Authors: | Wang Xiao-Qiu Wu Shi-F Jian Guo-Shu and Pan Shi |
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| Institution: | Department of Physics, Dalian University of Technology,Dalian,116024, China; Department of Physics, Dalian University of Technology,Dalian,116024, China;Department of Physics, Dalian University, Dalian,116622, China |
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| Abstract: | In this paper, the light-emitting spot sizes and throughputs of the four types of probes are studied using the finite-difference time-domain method, and these probes are also compared in performance.
Among these probes, a pyramidal AlGaAs tip coated entirely with a thin Ag film can provide the highest throughput and a single near-field spot size. Probe coated with a 3nm Ag film and incident
light with a wavelength of 800nm seems to offer the optimum condition for high throughput and ultra-small spot size, which enables the realization of ultra-high density storage. |
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| Keywords: | near field optical storage ultra-small spot size throughput pyramidal AlGaAs probe finite-difference time-domain (FDTD) method |
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