Zhang Haojun, Gao Chunqing, Fu Shiyao
Opt Lett. 2025 May 1;50(9):2840-2843. doi: 10.1364/OL.559505.
Optical skyrmions, a type of topologically protected quasiparticle, have undergone various deformations in recent years. In this Letter, we present a scheme that can achieve the selective formation of generalized optical skyrmions. In our proposal, a liquid-crystal spatial light modulator and a variable liquid-crystal retarder, both of which are commonly programmable devices, are employed, allowing for the on-demand precise manipulation of topological textures of various quasiparticles including but not limited to skyrmions, antiskyrmions, and bimerons. The proof-of-concept experiments illustrate that generalized optical skyrmions whose skyrmion number up to 5 can be well generated with on-demand tailored topological textures. While maintaining a simple setup, the system demonstrates a notable capacity for the manipulation of intricate high-order textures, signifying its considerable potential for extensive and sophisticated applications in the generation and manipulation of skyrmions.
光学斯格明子是一种具有拓扑保护的准粒子，近年来经历了各种形变。在本信函中，我们提出了一种能够实现广义光学斯格明子选择性形成的方案。在我们的方案中，使用了液晶空间光调制器和可变液晶相位延迟器，这两者都是常见的可编程器件，从而能够对包括但不限于斯格明子、反斯格明子和双斯格明子在内的各种准粒子的拓扑纹理进行按需精确操控。概念验证实验表明，可以很好地生成斯格明子数高达5的广义光学斯格明子，并具有按需定制的拓扑纹理。在保持设置简单的同时，该系统展示了操控复杂高阶纹理的显著能力，这表明其在斯格明子的生成和操控方面具有广泛而复杂应用的巨大潜力。
