声光衍射光束对光轴的跟踪:硫酸甘油三酯晶体中矢量涡旋光束的产生

IF 3.9 4区 物理与天体物理 0 OPTICS
O. Krupych, M. Kostyrko, D. Adamenko, I. Skab, R. Vlokh
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引用次数: 2

摘要

我们分析了双轴晶体中发散衍射光束沿其中一条光轴传播时的声光相互作用。我们证明了衍射光束显示了偏振态的特定空间分布,并传递了光矢量涡场。它可以被称为具有不可分的偏振态和空间态的光矢量涡旋光束。至少系统内纠缠发生在不同的自由度之间,在我们的例子中由自旋角动量和轨道角动量表示。通过改变光轴之间的夹角,可以控制光束的空间方向。这是通过调整光辐射的波长和声波的频率来实现的。我们使用光学双轴硫酸甘油三酯晶体的特定示例进行了基本计算,并假设初始声波频率为50 MHz,光波长从400到675 nm变化。然后得到的声波频率可以增加到133 MHz的纵向声学模式和93 MHz或89 MHz的两个横向模式。换句话说,人们可以用硫酸甘油三酯来制造光漩涡并控制它们的空间方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tracking of optic axis with an acousto-optically diffracted beam: generation of vector-vortex beam in triglycine sulfate crystals
We analyze acousto-optic interactions for the case when a divergent diffracted optical beam propagates along one of the optic axes in biaxial crystals. We demonstrate that the diffracted beam reveals a specific spatial distribution of polarization states and transfers an optical vector-vortex field. It can be referred to as an optical vector-vortex beam with inseparable polarization and spatial states. At least intra-system entanglement occurs between different degrees of freedom, which are represented by the spin and orbit angular momentums in our case. The spatial orientation of the beam can be controlled while changing the angle between the optic axes. This is achieved by tuning the wavelength of optical radiation and the acoustic wave frequency. We have performed basic calculations using a particular example of optically biaxial triglycine sulfate crystals and assuming that the initial acoustic wave frequency amounts to 50 MHz and the light wavelength changes from 400 to 675 nm. Then the resulting acoustic frequency can increase up to 133 MHz for the longitudinal acoustic mode and 93 MHz or 89 MHz for the two transverse modes. In other words, one can build a generator of optical vortices and operate their spatial orientation, using triglycine sulfate.
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来源期刊
CiteScore
9.90
自引率
0.00%
发文量
20
审稿时长
>12 weeks
期刊介绍: “Ukrainian Journal of Physical Optics” contains original and review articles in the fields of crystal optics, piezo-, electro-, magneto- and acoustooptics, optical properties of solids and liquids in the course of phase transitions, nonlinear optics, holography, singular optics, laser physics, spectroscopy, biooptics, physical principles of operation of optoelectronic devices and systems, which need rapid publication. The journal was founded in 2000 by the Institute of Physical Optics of the Ministry of Education and Science of Ukraine.
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