At the Dawn of a New Era in Terahertz Technology. - Iwao Hosako; Norihiko Sekine; Mikhail Patrashin; Shingo Saito; Kaori Fukunaga; Yasuko Kasai; Philippe Baron; Takamasa Seta; Jana Mendrok; Satoshi Ochiai; Hiroaki Yasuda (Proc. IEEE, 2007)