Title :
Broadband scanning spectrometer with heterodyne SIS (Superconductor-Insulator-Superconductor) receiver
Author :
Kikuchi, K. ; Kohjiro, S. ; Maezawa, M. ; Ozeki, H.
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba
Abstract :
We are developing a heterodyne receiver based on an SIS (superconductor-insulator-superconductor) mixer, aiming to realize a highly sensitive, broadband, and precise measurement system at terahertz frequencies. The receiver noise temperature is less than ~20 times of the quantum limit in the frequency range of 0.2-0.5 THz. Combining of the heterodyne SIS receiver, a frequency scanning system of local oscillator, and a high-resolution back-end spectrometer, we demonstrated a spectroscopic measurement of CH3CN gas, with the frequency resolution of 61 kHz in a 418-430 GHz range.
Keywords :
spectrochemical analysis; submillimetre wave mixers; submillimetre wave receivers; submillimetre wave spectroscopy; superconducting device noise; superconductor-insulator-superconductor mixers; broadband scanning spectrometer; frequency 0.2 THz to 0.5 THz; frequency 418 GHz to 430 GHz; frequency 61 kHz; frequency resolution; frequency scanning system; heterodyne receiver; high-resolution back-end spectrometer; receiver noise temperature; superconductor-insulator-superconductor mixer; terahertz frequencies; Bandwidth; Extraterrestrial measurements; Frequency measurement; Frequency synthesizers; Optical filters; Receivers; Spectroscopy; Superconducting device noise; Superconducting devices; Temperature;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665729
