中国物理B ›› 2000, Vol. 9 ›› Issue (1): 65-68.doi: 10.1088/1009-1963/9/1/013

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

INCREASING TRANSVERSE STABILITY OF OPTICAL TWEEZERS BY USING DUAL-GAUSSIAN BEAM PROFILE

姚新程, 李兆霖, 程丙英, 韩学海, 张道中   

  1. Optical Physics Laboratory, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:1999-08-10 出版日期:2005-06-10 发布日期:2005-06-10
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 1989380).

INCREASING TRANSVERSE STABILITY OF OPTICAL TWEEZERS BY USING DUAL-GAUSSIAN BEAM PROFILE

Yao Xin-cheng (姚新程), Li Zhao-lin (李兆霖), Cheng Bing-ying (程丙英), Han Xue-hai (韩学海), Zhang Dao-zhong (张道中)   

  1. Optical Physics Laboratory, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:1999-08-10 Online:2005-06-10 Published:2005-06-10
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 1989380).

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摘要： Trapping force was calculated with a homogeneous dielectric sphere model. Results indicate that the transverse trapping force of optical tweezers can be increased effectively through modifying laser beam profile while the axial stability of the system is still assured. This is quite important when optical tweezers are applied to the precise measurements for single biological molecule.

Abstract: Trapping force was calculated with a homogeneous dielectric sphere model. Results indicate that the transverse trapping force of optical tweezers can be increased effectively through modifying laser beam profile while the axial stability of the system is still assured. This is quite important when optical tweezers are applied to the precise measurements for single biological molecule.

中图分类号:  (Mechanical effects of light on atoms, molecules, and ions)

  • 37.10.Vz
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)