用于驱动超导隧道混频器的高扫描速度光学同步双通道太赫兹信号发生器及其在活性气体传感中的应用。

High-sweeping-speed optically synchronized dual-channel terahertz-signal generator for driving a superconducting tunneling mixer and its application to active gas sensing.

作者信息

Oh Kyoung-Hwan, Shimizu Naofumi, Kohjiro Satoshi, Kikuchi Ken'ichi, Wakatsuki Atsushi, Kukutsu Naoya, Kado Yuichi

机构信息

NTT Microsystem Integration Laboratories, Nippon Telegraph and Telephone corporation, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa Pref, 243-0198, Japan.

出版信息

Opt Express. 2009 Oct 12;17(21):18455-61. doi: 10.1364/OE.17.018455.

DOI:10.1364/OE.17.018455

PMID:20372575

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.

摘要

我们提出了一种用于有源气体传感系统的高扫描速度光学同步双通道太赫兹（THz）信号发生器，该系统配备了超导体-绝缘体-超导体（SIS）混频器。该发生器能够以375 GHz/s的速度和500 MHz的频率分辨率扫描200至500 GHz的频率范围。利用所开发的气体传感系统，在该频率范围内成功地对N₂O气体进行了气体吸收线测量。