近轴光学系统中圆偏振涡旋光束的角动量特性。

IF 1.4 3区物理与天体物理 Q3 OPTICS

Journal of The Optical Society of America A-optics Image Science and Vision Pub Date : 2024-11-01 DOI:10.1364/JOSAA.541429

Xiaojin Yin, Yu Li, Guoliang Jin, Jing Wang, Jinhong Liu, Jinhong Li

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引用次数: 0

摘要

研究了圆偏振涡旋光束（CPVBs）在两个近轴光学系统[自由空间光纤和梯度折射率光纤]中的角动量特性。对两种近轴光学系统中CPVBs的横向光强、纵向光强、纵向电场相位、动能、总自旋AM （SAM）、横向型SAM （t-SAM）、纵向型SAM （l-SAM）和轨道角动量（OAM）进行了表征。研究了CPVBs在自由空间和GRIN光纤中的自旋轨道耦合。当CPVB的OAM和SAM具有相同的旋转方向和相反的旋转方向时，自旋轨道耦合在自由空间和GRIN光纤中表现出不同的特性。

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Angular momentum properties of a circularly polarized vortex beam in the paraxial optical systems.

The angular momentum (AM) properties of circularly polarized vortex beams (CPVBs) in two paraxial optical systems [free space and a gradient-index (GRIN) fiber] are demonstrated. The transverse light intensity, the longitudinal light intensity, the phase of the longitudinal electric field, the kinetic momentum, the total spin AM (SAM), the transverse-type SAM (t-SAM), the longitudinal-type SAM (l-SAM), and the orbital angular momentum (OAM) of CPVBs in the two paraxial optical systems are characterized. Spin-orbit coupling of CPVBs is studied during propagation in free space and in a GRIN fiber. When the OAM and the SAM of a CPVB have the same direction of rotation and when they have opposite directions of rotation, the spin-orbit coupling exhibits different characteristics in free space and in the GRIN fiber.

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来源期刊

Journal of The Optical Society of America A-optics Image Science and Vision 物理-光学

CiteScore

3.40

自引率

10.50%

发文量

417

审稿时长

3 months

期刊介绍： The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as: * Atmospheric optics * Clinical vision * Coherence and Statistical Optics * Color * Diffraction and gratings * Image processing * Machine vision * Physiological optics * Polarization * Scattering * Signal processing * Thin films * Visual optics Also: j opt soc am a.