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arXiv 1509.05908physics.optics
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利用偏振控制调节光镊的刚度不对称性

Tuning the Stiffness Asymmetry of Optical Tweezers via Polarization Control

Jinmyoung So, Jai-Min Choi

摘要:

利用高度聚焦的线偏振激光束的光镊具有很强的陷阱刚度不对称性,这源于横向平面中的各向异性场分布。在前人对偏振相关聚焦场分布研究的基础上,我们从光阱刚度不对称性的角度探讨了其在光阱中的表现。我们的研究结果表明,偏振控制提供了一个多功能的调谐旋钮剪裁光学势景观,即使在一个强烈修改的情况下,在存在的介质球大于陷阱光束的波长的聚焦场。

英文摘要:

Optical tweezers that utilize a highly focused, linearly polarized laser beam exhibit strong trap stiffness asymmetry, which originates from the anisotropic field distribution in the transverse plane. Based on the previous study of polarization-dependent focused field distribution, we explore its manifestation in optical trap in terms of trap stiffness asymmetry. Our results demonstrate that polarization control provides a versatile tuning knob for tailoring optical potential landscape even in case of a strongly modified focused field in the presence of dielectric spheres larger than the wavelength of a trap beam.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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