作者
Siyuan Ma,Siyuan Ma,Siyuan Ma,Siyuan Ma,M. Xu,M. Xu,M. Xu,M. Xu,Mingbo Pu,Mingbo Pu,Mingbo Pu,Mingbo Pu,Yuhan Zheng,Yuhan Zheng,Yuhan Zheng,Yuhan Zheng,Qingji Zeng,Qingji Zeng,Xin Luo,Xin Luo,Xiang Liu,Fei Zhang,Fei Zhang,Fei Zhang,Yinghui Guo,Yinghui Guo,Yinghui Guo,Yinghui Guo,Xiong Li,Xiong Li,Xiong Li,Xiaoliang Ma,Xiaoliang Ma,Xiaoliang Ma,Xiangang Luo,Xiangang Luo,Xiangang Luo
摘要
Abstract Recently, full Poincaré beams (FPBs) with spatially variant polarization states spanning the entire surface of the Poincaré sphere have attracted considerable interests. Expanding the FPBs into an array way has the promising applications from multiparticle manipulation to optical communication. However, how to efficiently generate a high‐purity FPB array with intracavity method remains elusive. Here, a metasurface‐integrated degenerate cavity laser is proposed for efficient generation of 10 × 10 FPB array, where a pair of metasurfaces are adopted to independently modulate the circular polarization state while compensating the mode discrepancies within the cavity. Such a design strategy enables a self‐reproducing intracavity optical field, concurrently ensuring the stabilization of intracavity oscillation. It is numerically demonstrated that the purity of orbital angular momentum (OAM) in the first‐order FPB array can approach to 92.89%, with a root‐mean‐square error (RMSE) of polarization ellipse parameters below 8.17%. This work provides a compact and efficient design platform for the generation of a variety of vector beam arrays and may find promising applications in free space communication and multiple particle manipulation.