中国物理B ›› 2005, Vol. 14 ›› Issue (1): 133-136.doi: 10.1088/1009-1963/14/1/024

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Simulation and optimization of pyramidal AlGaAs probe with ultra-small spot size and high throughput

吴世法1, 简国树1, 潘石1, 王晓秋2   

  1. (1)Department of Physics, Dalian University of Technology,Dalian,116024, China; (2)Department of Physics, Dalian University of Technology,Dalian,116024, China;Department of Physics, Dalian University, Dalian,116622, China
  • 收稿日期:2003-12-16 修回日期:2004-12-03 出版日期:2005-01-20 发布日期:2005-01-20
  • 基金资助:
    Project supported by the National Science Foundation of China (Grant No 30270367).

Simulation and optimization of pyramidal AlGaAs probe with ultra-small spot size and high throughput

Wang Xiao-Qiu (王晓秋)ab, Wu Shi-Fa (吴世法)a, Jian Guo-Shu (简国树)a, Pan Shi (潘石)a   

  1. a Department of Physics, Dalian University of Technology, Dalian 116024, China; b  Department of Physics, Dalian University, Dalian 116622, China
  • Received:2003-12-16 Revised:2004-12-03 Online:2005-01-20 Published:2005-01-20
  • Supported by:
    Project supported by the National Science Foundation of China (Grant No 30270367).

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摘要： 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.

关键词: near field optical storage, ultra-small spot size, throughput, pyramidal AlGaAs probe, finite-difference time-domain (FDTD) method

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.

Key words: near field optical storage, ultra-small spot size, throughput, pyramidal AlGaAs probe, finite-difference time-domain (FDTD) method

中图分类号: 

  • 4230N