Recently, the research team led by Zhuang Zhe and Liu Bin from the Key Laboratory of Third-Generation Semiconductor and High-Energy-Efficiency Devices at Nanjing University has made a significant breakthrough. They have successfully developed an electrically pumped gallium nitride-based whispering gallery mode microcavity laser. Through innovative structural design and device fabrication techniques, the team tackled long-standing challenges in gallium nitride-based lasers, such as high threshold currents, low quality factors, and multimode lasing. Their efforts have culminated in the realization of a new, stable single-mode visible light omnidirectional gigabit communication link. This advancement notably enhances both optical power and bandwidth, marking a substantial leap forward. This breakthrough is poised to offer an efficient light source for visible light communication and integrated photonics on chips, promising a wide range of applications in the future.