论文标题
二维控制的高阶模式和涡流模式转换器激光器的涡流光束
Two-dimensional-controlled high-order modes and vortex beams from an intracavity mode converter laser
论文作者
论文摘要
我们提出了一种新型的结构化光激光器方案，其散光模式转换器（AMC）是腔内元素，首先可以使Hermite-Gaussian（HG）模式具有完全控制的二维（2D）索引（M，N）和涡流角色（OAM）直接从Cavity的旋转角动量（OAM）。通过控制泵和腔内AMC的离轴位移来实现2D可调性。输出HGM，N光束可以用2D可调径向和方位角指数（P，L）将外部转换为OAM梁。通过某些参数控制，携带OAM的涡流束也可以直接从腔中产生。我们的设置提供了紧凑而简洁的结构化光源。它在扩展光学镊子，通信和非线性的各种应用方面具有巨大的潜力。
We present a novel scheme of structured light laser with an astigmatic mode converter (AMC) as intracavity element, first enabling the generation of Hermite-Gaussian (HG) modes with fully controlled two-dimensional (2D) indices (m,n) and vortex beams carrying orbital angular momentum (OAM) directly from cavity. The 2D tunability was realized by controlling the off-axis displacements of both pump and intracavity AMC. The output HGm,n beam could be externally converted into OAM beam with 2D tunable radial and azimuthal indices (p,l). With the certain parameter control, vortex beam carrying OAM also could be directly generated from the cavity. Our setup provides a compact and concise structured light source. It has great potential in extending various applications of optical tweezers, communications, and nonlinearity.
