Yasuhiko Arakawa Yasuhiko Arakawa Yasuhiko Arakawa (Japanese , "Arakawa Yasuhiko"; born 6 November 1952) is a Japanese physicist. His research focuses on semiconductor physics, including growth of nanostructures and their optoelectronic applications. Among his main achievements are the proposal of the concept of quantum dots and their application to quantum dot lasers, the observation of exciton-polariton Rabi-splitting in a semiconductor microcavity, or, recently, the first 3D photonic crystal nanocavity lasers with quantum dot gain. Yasuhiko Arakawa received a B.S. degree in 1975 and a Ph.D. degree in 1980, respectively, from the University of Tokyo, both in Electronics Engineering. In 1981 he became
Nihito Arakawa Solmiano scoring a knockdown in round two. After defending his title against fellow Japanese Ryūji Migaki by a unanimous decision, he travelled to Los Angeles to spar with Miguel Vázquez and others for over a month. He stopped compatriot Takehiro Shimada in round eight in his second defense in August 2012 while throwing over a hundred punches each in two rounds, and then vacated his title. In November 2012, Arakawa competed with Mexican Pedro Daniel Estrada in Mexico City on the main event of the "Gala Ring Telmex 2012". It was a WBC Silver lightweight title bout and was a