Broadband Nonlinear Photonics in Zeolite‐Based Selenium Chains

In this cover image, mythological stories are used to depict the content of article number 2200336 by Xintong Xu, Shuangchen Ruan, and co-workers. Sun Wukong is used to represent a scientific researcher. The six-sided cauldron represents the hexagonal prism-shaped aluminophosphate (AFI) crystal, while the cauldron mouth represents the pore channel of the AFI crystal. Through the cauldron mouth, selenium molecular chains are introduced to the sky by a beam of light. Sunlight in the background represents a continuous laser, which is converted into a mode-locked pulse through the selenium molecules.