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
Order of the Two Rivers Order of the Two Rivers The Order of the Two Rivers ("Wisam Al Rafidain") was an Order awarded by the Kings of Iraq and then the Presidents of Iraq. It was named after the two rivers the Euphrates and the Tigris that flow through the middle of the country. It was initially awarded by the kings of Iraq between 1922 when the monarchy was established, and 1958 when the monarchy ended. It was continued by the presidents of Iraq through the 1960s, 1970s and 1980s. It had five classes and two divisions (military and civil). Some of the recipients of