Integration of a symmetric D–A–D chromophore with biocompatible silk fibroin for ultrafast measurement and flexible solid-state lasing

Key Points

• The study aims to investigate the combination of a D–A–D chromophore with silk fibroin for enhancing optical properties.
• Developed a symmetric D–A–D chromophore and combined it with silk fibroin.
• Evaluated two-photon absorption characteristics.
• Assessed lasing efficiency in a solid-state format.
• The D–A–D chromophore exhibited strong two-photon absorption.
• Efficient lasing was achieved in the silk fibroin-integrated system.
• Ultrafast nonlinear optical measurements were successfully demonstrated.