[7p-N106-1~14] 3.1 光学基礎・光学新領域

14:15 〜 14:30英語発表

[7p-N106-4] Generation of optical skyrmions from a ring-resontor laser with an S-shaped coupler

〇ZHIWEI DAI¹, WENBO LIN², SANGMIN JI¹, HIROYA SAKUMOTO³, MITSURU TAKENAKA³, SATOSHI IWAMOTO¹ (1.RCAST and IIS, Univ. of Tokyo, 2.Science Tokyo, 3.Graduate School of Engineering, Univ. of Tokyo)

キーワード：

optical skyrmion、singular optics、semiconductor laser

This study reports the experimental observation of optical skyrmion features in the emission from an active nanophotonic laser. The device, a ring resonator with circular gratings and an S-shaped coupler, exhibits unidirectional lasing at 1481 nm under pulsed excitation at 5 K. Polarization-resolved measurements reveal vortex-like textures covering the full Poincaré sphere, with a calculated skyrmion number of −1.0098. The results demonstrate active generation of optical skyrmions, though fabrication-related imperfections introduce minor deviations from the design.