title: High-sweeping-speed optically synchronized dual-channel terahertz-signal generator for driving a superconducting tunneling mixer and its application to active gas sensing.
abstract: We propose a high-sweeping-speed optically synchronized dual-channel terahertz (THz) signal generator for an active gas-sensing system with a superconductor-insulator-superconductor (SIS) mixer. The generator can sweep a frequency range from 200 to 500 GHz at a speed of 375 GHz/s and a frequency resolution of 500 MHz. With the developed gas-sensing system, a gas-absorption-line measurement was successfully carried out with N(2)O gas in that frequency range.
authors.affiliation: NTT Microsystem Integration Laboratories, Nippon Telegraph and Telephone corporation, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa Pref, 243-0198, Japan. ohkh@aecl.ntt.co.jp
authors.forename: Kyoung-Hwan
authors.initials: KH
authors.lastname: Oh
authors.forename: Naofumi
authors.initials: N
authors.lastname: Shimizu
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kohjiro
authors.forename: Ken'ichi
authors.initials: K
authors.lastname: Kikuchi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Wakatsuki
authors.forename: Naoya
authors.initials: N
authors.lastname: Kukutsu
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kado