“Technology media journalists report that researchers have made significant progress in the field of on-chip ZnO lasing applications. They fabricated a circular ZnO microdisk on a Si substrate, which exhibits a unique toroid structure and supports optically pumped WGMs lasing in the ultraviolet region with a high Q factor. The high-quality cavity also supports the BGR phenomenon, and the lasing spectrum can be modulated by the BM effect and EHP effect.”