2022年4月1日 · In this paper, the common beams carrying OAM are introduced, and the techniques of generating OAM beams in free space are summarized, including intracavity conversion method and extracavity conversion method. The application range of OAM beams studied at present is discussed, and the development trend of OAM beams is prospected.

We simulate a spatiotemporal OAM beam with a time-variant beam waist by coherent combining multiple frequencies each containing multiple LG modes. We analyze its beam waist oscillation depending on the number of frequencies and modes.

2024年9月11日 · OAM modes form the OAM-maintaining image at the specific length of an MMI waveguide. The properties of the OAM-maintaining image are studied by considering three main parameters including the...

2023年3月15日 · Light field control through a diffuser using feedback wavefront shaping (WS) is an emerging method for sorting in orbital angular momentum (OAM) multiplexed communications. However, the feedback iterative optimization of the wavefront shaper converges slowly, reducing the real-time capability.

2023年7月1日 · To verify the feasibility and adaptivity of the scheme, we analyze the recognition performance of the OAM modes of POV beams under different beam hollow radius, beam waist radius, wavelengths and transmission distances in an unknown turbulent environment.

2017年1月17日 · Measuring orbital angular momentum (OAM) states of vortex beams is of great importance in diverse applications employing OAM-carrying vortex beams. We present a simple and...

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2025年1月2日 · This research demonstrates that vector vortex beams with dual-fractional OAM maintain stability under 0.5-order vector polarization, confirming that multiple OAM states can coexist within a...

为了提高光通信系统的信息传输速率，除了可以采用幅度、相位和正交相移键控等传统的调制解调方式之外，光子具有的轨道角动量（oam）。 因此，在 通信 系统中利用 涡旋 光束 可实现多信道传输，从而提高系统的传输容量 与 通信 速率。

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