In our research group, we conduct studies on nanomaterial science using advanced nano-spectroscopy with time and spatially confined light (electromagnetic field) – ultra-fast, ultra-broadband near-field optical microscopy.

Microscopy and spectroscopy, which visualize the microscopic states of matter, have made significant contributions to the development of modern sciences. Microscopes and spectroscopy can obtain various information through the light-matter interaction.

We are developing and applying novel nano-spectroscopy techniques using ultraviolet, visible, and infrared light confined in both time and space. Spatially confined light is known as a “near field,” and it has recently been shown that its scale can reach the atomic level (one hundred billionth of a meter). Moreover, by using ultra-short pulse lasers, we can confine the near field in time as well, allowing us to observe the interaction of light and matter at the extreme limits of time and space. We are challenging the frontiers of nanomaterials science through microscopes and spectroscopy using light confined in both time and space.