Based on the recently developed Cartesian multipole expansion theory, we analytically analyze the conservative and non-conservative nature of the optical force acting on a spherical particle of arbitrary size and isotropic composition immersed in the optical Bessel beams of arbitrary orders and polarizations. It is rigorously proved that the conservative force on the particle in Bessel beams aligns in the radial direction transverse to beam propagation, while the non-conservative force is completely non-radial, lying in the azimuthal and longitudinal directions. To the best of our knowledge, our work provides the first analytical partition between the conservative and non-conservative components of the optical force on a particle of arbitrary size and composition placed in a class of extensively employed optical beams in practical optical manipulation, beyond the small particle limit.

中文翻译：

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将贝塞尔光束中的球形粒子上的光学力解析分解为保守和非保守部分

基于最近发展的笛卡尔多极膨胀理论，我们分析了作用在任意大小和各向同性组成的球形粒子上的光力的保守和非保守性质，该球形粒子浸没在任意阶数和偏振的贝塞尔光学光束中。严格证明，贝塞尔光束中的粒子上的保守力在横向于光束传播的径向方向上对齐，而非保守力在方位角和纵向方向上是完全非径向的。据我们所知，