High-sweeping-speed optically synchronized dual-channel terahertz-signal generator for driving a superconducting tunneling mixer and its application to active gas sensing.
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.
Oh
Kyoung-Hwan
KH
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
Shimizu
Naofumi
N
Kohjiro
Satoshi
S
Kikuchi
Ken'ichi
K
Wakatsuki
Atsushi
A
Kukutsu
Naoya
N
Kado
Yuichi
Y