[7p-N106-1~14] 3.1 Basic optics and frontier of optics

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)English Presentation

[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)

Keywords:

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.