We are delighted to welcome Dr. Xiaocong Wang to the RCALS team as a postdoctoral fellow. Dr. Wang received his Ph.D. from the University of Science and Technology of China in 2025, where his doctoral research focused on ‘harmonically mode-locked ultrafast lasers based on photonic crystal fibers (PCFs)’.

Reflecting on his academic journey, Dr. Wang noted, “PCFs have become indispensable in ultrafast laser science, enabling everything from the precise control of optical frequency combs to the efficient generation of supercontinuum spectra and the reliable operation of mode-locked lasers. Their vast scientific and practical potential has continuously driven my work. It was this research environment that inspired me to pursue studies on the mechanisms of harmonic mode-locking at RCALS. I am now honored and excited to join the RCALS team.” At the Russell Center, his research primarily focuses on the generation mechanisms and stability control of harmonic mode-locking in PCFs, while also exploring compatible hollow-core fiber (HCF) technologies.

Dr. Wang added, “I am eager to collaborate with my colleagues at the Russell Center to explore new applications of PCFs in harmonic mode-locking. Moving forward, I plan to bridge fundamental studies of mode-locking mechanisms with practical engineering adaptations to boost ultrafast laser performance and enable its wider deployment.”

Let us all look forward to Dr. Wang’s forthcoming breakthroughs in harmonically mode-locked ultrafast laser, which promise to open broader avenues for the development and application of PCF technology.