We are developing laser and microwave diagnostics and studying high temperature plasma physics on Larger Helical Device (LHD) of National Institute for Fusion Science (NIFS). We have developed laser imaging interferometer for electron density profile, phase contrast imaging for turbulence measurements. Recently,  we started to develop  collective Thomson scattering to measure ion dynamics. This laboratory is located in NIFS, also belongs to Kyushu University for graduate school education.