| 高斯波束致微粒旋转的理论研究 |
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| 引用本文： | 杜云刚,韩一平,韩国霞,李继军.高斯波束致微粒旋转的理论研究[J].物理学报,2011,60(2):28702-028702. |
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| 作者姓名： | 杜云刚 韩一平 韩国霞 李继军 |
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| 作者单位： | (1)内蒙古工业大学理学院物理系,呼和浩特 010051; (2)西安电子科技大学理学院应用物理系,西安 710071; (3)西安电子科技大学理学院应用物理系,西安 710071;内蒙古工业大学理学院物理系,呼和浩特 010051 |
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| 基金项目： | 国家自然科学基金(批准号:60771039)和内蒙古工业大学科研基金(批准号:X200721)资助的课题. |
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| 摘 要： | 基于偏振光波是左旋光子与右旋光子组成的, 从广义米理论出发, 得出了偏振高斯波束对球形粒子的辐射俘获力和力矩的表示式. 分析了微粒在圆偏振高斯波束照射时产生两种不同旋转的原因, 并结合光子的量子特性进行了解释. 对圆偏振高斯波束中粒子的两种力矩进行了数值模拟, 讨论了粒子半径、折射率、吸收系数和束腰半径对力矩及光致旋转的影响.
关键词：
光致旋转
力矩
高斯波束
光子
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| 关 键 词： | 光致旋转 力矩 高斯波束 光子 |
Theoretical study on the rotation of particles driven by Gaussian beam |
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| Du Yun-Gang,Han Yi-Ping,Han Guo-Xia,Li Ji-Jun.Theoretical study on the rotation of particles driven by Gaussian beam[J].Acta Physica Sinica,2011,60(2):28702-028702. |
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| Authors: | Du Yun-Gang Han Yi-Ping Han Guo-Xia Li Ji-Jun |
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| Institution: | 1)(Department of Applied Physics,School of Science,Xidian University,Xi’an 710071,China) 2)(Department of Physics,School of Science,Inner Mongolia University of Technology,Hohhot 010051,China) |
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| Abstract: | Based on the fact that the polarized beam is composed of L-photon and D-photon, the expressions of the radiation trapping forces and torques of spherical particle exerted by polarized Gaussian beam are obtained in the framework of the generalized Lorenz-Mie theory. The reasons of the two different rotations of particles driven by circularly polarized Gaussian beam are analyzed and explained in combination with the quantum properties of photon. Then numerical simulations are performed for the two kinds of torques acted on the particles by polarized Gaussian beam, and the effects on the torques and optically driven rotations of the radius, relative refractive index, absorbing coefficient of the particle and waist radius of the beam are discussed. |
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| Keywords: | optically driven rotation optical torque Gaussian beam photon |
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