Spatial mode conversion of a reflected polarized beam from an isotropic medium at brewster angle

IF 2.8 2区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

New Journal of Physics Pub Date : 2024-09-02 DOI:10.1088/1367-2630/ad50fe

Hua-Jie Hu, He-He Li, Xin-Zhong Li

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引用次数: 0

Abstract

In this study, the spatial mode evolution of a chiral polarized beam during reflection on an isotropic medium surface at Brewster angle is both theoretically and experimentally investigated. In this process, the topological charge of the reflection field’s horizontal component increases (decreases) by one, relative to the specific left (right) elliptical polarization incident beam. While incident l_i-order vortex beam is in a certain polarization state, the intensity distribution of the reflection field’s horizontal component appears as the interference pattern of the

li±1

-order output vortex beams. The conversion occurs between the spin and orbital angular momentum and does not violate the conservation of the total angular momentum. We explain the physical mechanism of this phenomenon using phase shift theorem, and analyze the effect of ellipticity and polarization angle on this physical phenomenon.

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各向同性介质在布鲁斯特角反射偏振光束的空间模式转换

本研究从理论和实验两方面研究了手性偏振光束在布鲁斯特角各向同性介质表面反射过程中的空间模式演变。在此过程中，相对于特定的左（右）椭圆偏振入射光束，反射场水平分量的拓扑电荷增加（减少）1。当入射的里阶涡旋光束处于某种偏振态时，反射场水平分量的强度分布会呈现出里±1阶输出涡旋光束的干涉图案。这种转换发生在自旋角动量和轨道角动量之间，并不违反总角动量守恒。我们用相移定理解释了这一现象的物理机制，并分析了椭圆度和偏振角对这一物理现象的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

New Journal of Physics 物理-物理：综合

CiteScore

6.20

自引率

3.00%

发文量

504

审稿时长

3.1 months

期刊介绍： New Journal of Physics publishes across the whole of physics, encompassing pure, applied, theoretical and experimental research, as well as interdisciplinary topics where physics forms the central theme. All content is permanently free to read and the journal is funded by an article publication charge.