Dynamic analysis and rotation experiment of an optical-trapped microsphere in air

Li Wenqiang; Li Nan; Shen Yu; Fu Zhenhai; Su Heming; Hu Huizhu

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Dynamic analysis and rotation experiment of an optical-trapped microsphere in air

机译：空气中光捕获微球的动态分析与旋转实验

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A dual-fiber optical trap system to trap and rotate a borosilicate microsphere has been proposed and experimentally demonstrated. The trapping system can be used as a probe to measure environmental parameters, such as torque, force, and viscosity of the surrounding medium. Under various conditions with different fiber misalignments, optical power, and fiber separation, the trapped sphere will exhibit three motion profiles including random oscillation, round rotation, and abnormal rotation. The power spectrum analysis method is used to measure rotation rates up to 385 Hz, which can be further increased by increasing laser power. In addition, simulation and experiment show consistent results in rotation rates and motion trajectory, which verifies the validity and accuracy of dynamic analysis. (C) 2018 Optical Society of America

机译：已经提出了一种捕获和旋转硼硅酸盐微球的双纤维光学捕集系统并进行实验证明。捕获系统可用作测量环境参数的探针，例如扭矩，力和围绕介质的粘度。在具有不同纤维未对准的各种条件下，光功率和纤维分离，捕获的球体将显示三个运动型材，包括随机振荡，圆形旋转和异常旋转。功率谱分析方法用于测量高达385Hz的旋转速率，这可以通过增加激光功率进一步增加。此外，仿真和实验表明旋转速率和运动轨迹的一致结果验证了动态分析的有效性和准确性。（c）2018年光学学会

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来源
《Applied optics》 |2018年第4期|共6页
作者
Li Wenqiang; Li Nan; Shen Yu; Fu Zhenhai; Su Heming; Hu Huizhu;
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作者单位

Zhejiang Univ Coll Opt Sci &

Engn State Key Lab Modern Opt Instrumentat Hangzhou 310027 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn State Key Lab Modern Opt Instrumentat Hangzhou 310027 Zhejiang Peoples R China;

Zhejiang Univ Sci &

Technol Dept Appl Phys Hangzhou 310023 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn State Key Lab Modern Opt Instrumentat Hangzhou 310027 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn State Key Lab Modern Opt Instrumentat Hangzhou 310027 Zhejiang Peoples R China;

Zhejiang Univ Coll Opt Sci &

Engn State Key Lab Modern Opt Instrumentat Hangzhou 310027 Zhejiang Peoples R China;

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正文语种 eng
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Dynamic analysis and rotation experiment of an optical-trapped microsphere in air

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