Title :
Real-time terahertz time-domain spectroscopy based on asynchronous optical sampling
Author :
Moon, K. ; Han, Y. ; Jung, E. ; Lim, M. ; Im, C. ; Han, H.
Author_Institution :
POSTECH, Pohang, South Korea
Abstract :
A real-time terahertz time-domain spectroscopy (THz-TDS) system based on the ASOPS technique was demonstrated. The THz TDS system had a maximum time delay of 10 ns, corresponding to a 3 m-long time delay, and a maximum frequency resolution of 100 MHz. For single-scanning measurements, we demonstrated real-time THz measurements in both time and frequency domains. The typical signal-to-noise ratio (SNR) was better than 60 ~ 70 dB within 50 s.
Keywords :
delays; terahertz spectroscopy; asynchronous optical sampling; real-time terahertz time-domain spectroscopy; single-scanning measurements; Delay effects; Frequency domain analysis; Frequency measurement; Real time systems; Sampling methods; Signal resolution; Signal to noise ratio; Spectroscopy; Time domain analysis; Time measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325534
