大学物理 ›› 2008, Vol. 27 ›› Issue (3): 14-14.

• 著者文摘 • 上一篇    下一篇

光梯度力与激光捕获

喻有理 徐忠锋 李普选   

  1. 西安交通大学理学院,陕西西安710049
  • 出版日期:2008-03-25 发布日期:2008-03-20

Forces of gradient laser and optical trapping

  • Online:2008-03-25 Published:2008-03-20

摘要: 从电偶撅子在非均匀电磁场中所受梯度力出发,用光的电磁理论和电解质小球的电偶极子模型,论述了介质小球在光场中所受兜梯瑗为与羌强梯度成正比,并以此来定量说明激光对介质小球的捕获原理.

关键词: 梯度力, 电偶极子, 激光捕获

Abstract: From the gradient force upon an electric dipole in non-uniform electromagnetic field, the magnitude of the optical gradient force on a dielectric microsphere in light field is proportional to the field gradience and the principle of a single beam gradient laser trapping a dielectric microsphere are derived.

Key words: electric dipole, gradient force, optical trapping

中图分类号: 

  • O439