OAM and polarization switchable vector vortices generated in a Yb:YAG microchip laser

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-06-03 DOI:10.1016/j.optcom.2025.132068

Yuxiang Dong , Sibo Huang , Siyuan Liu , Xingyu Zhu

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引用次数: 0

Abstract

Vector vortex beams (VVBs) are essential for applications in high-capacity optical communication, micromanipulation, quantum information processing, and material processing. However, it is a challenge to manipulate orbital angular momentum (OAM) and polarization for VVBs. Here, with annular beam pumping, VVBs with switchable OAM and polarization are obtained in a microchip laser constructing with a 0.8–mm thin Yb:YAG crystal. Radially polarized vortex beam and VVB with two OAM and polarization state spatially varying as E_ϕ sin(ϕ) + E_r cos(ϕ) have been obtained. The switch of the radially polairzed vortex beam to the VVB with two OAMs occurres when the input pump power (P_in) reaches 5.2 W. Radially polarized vector beam with output power up to 0.5 W is obtained experimentally. The output power of VVB with two OAMs increases from 0.5 to 0.72 W as P_in increases. VVBs with switchable OAM and polarization obtained in the microchip laser oscillate around 1030 nm. Stable four-longitudinal modes oscillate for VVB with two OAMs. High beam quality, high-power VVBs with switchable OAM and polarization generated in a compact microchip laser have potential applications on laser machining, high-resolution imaging and micromanipulation.

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Yb:YAG微芯片激光器中产生的OAM和偏振可切换矢量涡

矢量涡旋光束（VVBs）在大容量光通信、微操作、量子信息处理和材料处理等领域的应用是必不可少的。然而，对VVBs的轨道角动量（OAM）和极化进行控制是一个挑战。通过环形束抽运，在0.8 mm薄Yb:YAG晶体构成的微芯片激光器中获得了具有可切换OAM和偏振的VVBs。得到了径向极化涡旋光束和具有两个OAM的VVB，偏振态在空间上以ϕ - sin(φ) + Er cos（φ）变化。当输入泵浦功率（引脚）达到5.2 W时，径向极化涡旋光束切换到两个oam的VVB。实验得到了输出功率达0.5 W的径向偏振矢量光束。双oam的VVB输出功率随着引脚的增加从0.5 W增加到0.72 W。在微芯片激光器中获得的具有可切换OAM和偏振的VVBs振荡在1030nm左右。具有两个oam的VVB的稳定四纵模振荡。在小型微芯片激光器中产生的具有可切换OAM和偏振的高光束质量、高功率VVBs在激光加工、高分辨率成像和微操作方面具有潜在的应用前景。

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

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.