A high-T-c intrinsic Josephson junction emitter tunable from 0.5 to 2.4 terahertz

作者：Kashiwagi Takanari^*; Sakamoto Kazuki; Kubo Hiroyuki; Shibano Yuuki; Enomoto Takuma; Kitamura Takeo; Asanuma Kentaro; Yasui Takaki; Watanabe Chiharu; Nakade Kurama; Saiwai Yoshihiko; Katsuragawa Takuya; Tsujimoto Manabu; Yoshizaki Ryozo; Yamamoto Takashi; Minami Hidetoshi; Klemm Richard A; Kadowaki Kazuo

来源：Applied Physics Letters, 2015, 107(8): 082601.

DOI：10.1063/1.4929715

Strong, monochromatic, coherent and continuous terahertz (THz) radiation was generated from the intrinsic Josephson junctions in a cylindrical stand-alone mesa sandwich structure fabricated from a single crystal of the high-temperature superconductor Bi2Sr2CaCu2O8+delta. By varying the base temperature and the dc bias current-voltage characteristic (IVC) points, the emission frequency is tunable from 0.5 to a record high 2.4 THz observed on two inner IVC branch points. Strong emission power peaks were observed at 1.0 THz and 1.6 THz. This device is hence an excellent candidate to fill the "THz gap" between similar to 1.4 and 2.0 THz.

• 出版日期2015-8-24