Dr. M. Ohtsu is currently a professor of The University of Tokyo. He is also a leader of Innovative Nanophotonics Component Development Project, New Energy and Industrial Technology Development Organization. He has been a president of IEEE LEOS Japan Chapter. He has also been a member of the board of directors, Japan Society of Applied Physics. He is a fellow of Optical Society of America. He is a member of editorial board, Springer Series in Optical Sciences.