Ultrafast laser processing by high-speed control of electron density
Precision laser processing with high-speed monitoring and feedback
Ultrafast quantitative imaging of electron-phonon interaction process
Deformation mechanism of cells by ultrafast biological stress imaging
Our group is developing ultrafast measurement and control methods for material properties under irradiation of intense light (femtosecond laser), and is aiming to create innovative processing technologies based on these methods. When materials are irradiated by femtosecond lasers, various physical phenomena appear on various time scales. We are developing ultrafast (picosecond to nanosecond) measurement methods that enable us to not only visualize but also quantitatively measure the phenomena that occur on each time scale. Furthermore, we are developing innovative processing technology by utilizing the physical phenomena revealed by ultrafast measurement. We have achieved hole drilling 5,000 times faster than conventional methods by transiently controlling physical properties.