Department John A.Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA;
Department of Applied Physics and Applied Mathematics Columbia University New York NY 10027 USA;
Department John A.Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA;
Department of Electronic Engineering&State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong Kowloon Hong Kong China;
HyperLight Corporation 501 Massachusetts Avenue Cambridge MA 02139 USA;
Department of Applied Physics and Applied Mathematics Columbia University New York NY 10027 USA;
Department John A.Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA;