The conventional dipole approximation (CDA) assumes that the EM fields a small particle generates in the presence of its surrounding material bodies are equal to the EM fields a point-like dipole generates in the absence of the material bodies. The authors of [Phys. Rev. A 98, 013806 (2018)] investigate a modified dipole approximation (MDA), which assumes that the EM fields the particle generates are equal to the EM fields a point-like dipole generates in the presence of the material bodies. The authors interpret the approximate EM force under the MDA as the sum of four terms named 'generalize…

2019-10-15physics.optics

Comment on "Poynting vector, orbital and spin momentum and angular momentum versus optical force and torque on arbitrary particle in generic optical fields"

We criticize the originality or correctness of some of the ideas and results recently reported by Ng et al. in arXiv:1511.08546.

2016-05-14physics.optics

电光效应下光学超晶格中光轨Angular Momentum的调谐

Tuning Optical Orbital Angular Momentum in Optical Superlattice under Electro-optic Effect

介绍了一种利用电光效应产生和调节聚焦高斯光束通过光学超晶格的光学轨道角动量的新方法。在我们的计算中，轨道角动量（OAM）来自于偏振旋度。我们看到，调整外部电场、束腰半径和晶体长度提供了光在横截面上的OAM的显著变化。相信本发明将在光学操纵领域得到应用。

2011-08-26physics.optics

评《时空光学涡旋（STOV）脉冲的模式结构与轨道角动量》

Comment on "Mode Structure and Orbital Angular Momentum of Spatiotemporal Optical Vortex (STOV) Pulses"

本文指出一篇STOV脉冲横向OAM研究论文存在数学错误与概念误读，澄清其计算结果仅为内禀贡献，且所用算符非厄米。

2024-03-01physics.optics

对“在实验室模拟厚大气层turbulence并应用于轨道angular momentum通信”的评论

Comment on `Simulating thick atmospheric turbulence in the lab with application to orbital angular momentum communication'

最近，Rodenburg等人（2014 New J.Phys.16 033020）提出了一种用于通过紧凑的实验室布置来模拟均匀分布的Kolmogorov谱湍流的长路径上的传播的方法，该紧凑的实验室布置使用两个仔细放置和控制的空间光调制器。我们表明，他们的模拟方法模仿的行为的平面波传播，而不是一般的波束波传播。因此，其轨道角动量（OAM）串扰结果准确地表示在通过湍流的水平路径传播中预期的行为的状态可能限于准直光束OAM模式，其直径足以使相干性引起的光束扩展可忽略不计。

2014-06-10physics.optics

对“轨道Angular Momentum光束变换的几何相位“一文的评论

Comments on "Geometric Phase Associated with Transformations of Optical Beams Bearing Orbital Angular Momentum"

在本说明中，我提出了我对上述文件中提出的想法的看法。

2003-10-18physics.gen-phphysics.optics

更多相关论文收起更多论文

Comment on "Comment on 'Spin-Momentum-Locked Edge Mode for Topological Vortex Lasing, Phys. Rev. Lett. vol. 125, 013903 (2020)'"

In our Letter (Phys. Rev. Lett. vol. 125, 013903 (2020)), we reported topological vortex lasers based on spin-momentum-locked edge modes. We observed that the near field spin and orbital angular momentum has a one-to-one far-field radiation correspondence of circular polarization and orbital angular momentum respectively. Sun et al. in their Comment (arXiv:2009.04700v1), however, argued that we did not perform numerical simulations on the near field information of our experimentally studied topological edge modes, and our mode assignment was mistaken and spoiled the one-to-one correspondence. …

2021-06-23physics.optics

Spin and orbital angular momenta of acoustic beams

We analyze spin and orbital angular momenta in monochromatic acoustic wave fields in a homogeneous medium. Despite being purely longitudinal (curl-free), inhomogeneous acoustic waves generically possess nonzero spin angular momentum density caused by the local rotation of the vector velocity field. We show that the integral spin of a localized acoustic wave vanishes in agreement with the spin-0 nature of longitudinal phonons. We also show that the helicity or chirality density vanishes identically in acoustic fields. As an example, we consider nonparaxial acoustic Bessel beams carrying well-de…

2019-05-03physics.class-phphysics.optics

光学时空斯格明子的构建

Construction of Optical Spatiotemporal Skyrmions

本文提出并实验验证了基于横向轨道角动量的皮秒脉冲时空斯格明子，其涵盖所有偏振态且无垂直螺旋扭转，具有更强稳定性，拓展了斯格明子家族并推动光学计量、传感与数据存储应用。

2025-03-10physics.optics

对“光的时空扭转”一文的评论

Comment on "Spatiotemporal torquing of light"

本文评论了某论文附录对时空光学涡旋横向轨道角动量理论的质疑，指出其混淆力学与光学方法导致错误，并采用力学方法分析证实了原理论的有效性。

2024-03-17physics.optics

非均匀光束中的光学力和力矩

Optical forces and torques in non-uniform beams of light

椭圆偏振光束中的自旋角动量在光阱中起着几个值得注意的作用。它对非均匀光束中的线动量密度有贡献，从而对施加在被照射物体上的辐射压力有贡献。它可以转换成轨道角动量，因此即使在光学各向同性物体上也可以施加扭矩。此外，它的旋度对力和力矩都有贡献，而没有自旋到轨道的转换。我们通过跟踪椭圆偏振光镊中扩散的胶体球来实验证明这些效应。一簇一簇的球体围绕着光束的轴线确定性地旋转。相比之下，一个单一的球体，经历随机布朗涡旋循环，映射出光学力场。

2011-12-19cond-mat.softphysics.optics

对"加速器中涡旋粒子角动量动力学"的评论

Comment on "Angular momentum dynamics of vortex particles in accelerators''

School of Physics and Engineering, ITMO University（ITMO大学物理与工程学院）

本文指出，针对加速器中涡旋粒子平均动能轨道角动量的BMT类方程的闭合条件不成立，且其假设抑制了横向动能角动量成分，强调需采用模式解析密度矩阵方法而非低阶矩的Ehrenfest方程。

2026-04-17hep-phphysics.acc-phphysics.optics