• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>8th China international nanoscience and technology symposium >Light distribution analysis of optical fibre probe-based near-field optical tweezers using FDTD
【24h】

Light distribution analysis of optical fibre probe-based near-field optical tweezers using FDTD

机译：基于FDTD的基于光纤探头的近场光镊的光分布分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Optical fibre probe-based near-field optical tweezers overcomes the diffraction limit of conventional optical tweezers, utilizing strong mechanical forces and torque associated with highly enhanced electric fields to trap and manipulate nanoscale particles. Near-field evanescent wave generated at optical fibre probe decays rapidly with the distance that results a significant reduced trapping volume, thus it is necessary to analyze the nearfield distribution of optical fibre probe. The finite difference time domain (FDTD) method is applied to characterize the near-field distribution of optical fibre probe. In terms of the distribution patterns, depolarization and polarization, the near-field distributions in longitudinal sections and crosssections of tapered metal-coated optical fibre probe are calculated. The calculation results reveal that the incident polarized wave becomes depolarized after exiting from the nano-scale aperture of probe. The near-field distribution of the probe is unsymmetrical, and the near-field distribution in the cross-section vertical to the incident polarized wave is different from that in the cross-section parallel to the incident polarized wave. Moreover, the polarization of incident wave has a great impact on the light intensity distribution.
机译：基于光纤探针的近场光镊克服了传统光镊的衍射极限，利用了强大的机械力和与高度增强的电场相关的扭矩来捕获和操纵纳米级颗粒。光纤探头产生的近场e逝波随着距离的增加而迅速衰减，导致陷波量大大减少，因此有必要分析光纤探头的近场分布。采用时域有限差分法（FDTD）表征光纤探针的近场分布。根据分布模式，去极化和极化，计算出锥形金属包覆光纤探头的纵向截面中的近场分布。计算结果表明，入射的偏振波从探头的纳米级孔径出射后就变为去极化。探针的近场分布是不对称的，并且垂直于入射偏振波的截面中的近场分布与平行于入射偏振波的截面中的近场分布不同。此外，入射波的偏振对光强度分布有很大影响。

著录项

  • 来源
  • 会议地点 Xiangtan(CN);Xiangtan(CN)
  • 作者

    B H Liu; L J Yang; Y Wang;

  • 作者单位

    School of Mechanical and Electrical Engineering,Harbin Institute of Technology,Heilongjiang,Harbin,150001,China;

    School of Mechanical and Electrical Engineering,Harbin Institute of Technology,Heilongjiang,Harbin,150001,China;

    School of Mechanical and Electrical Engineering,Harbin Institute of Technology,Heilongjiang,Harbin,150001,China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号