Title :
Frequency-swept asynchronous-optical-sampling THz time-domain spectroscopy
Author :
Yasui, T. ; Iyonaga, Y. ; Hsieh, Y. -D ; Sakaguchi, Y. ; Yokoyama, S. ; Inaba, H. ; Minoshima, K. ; Araki, T.
Author_Institution :
Grad. Sch. Eng. Sci., Osaka Univ., Toyonaka, Japan
Abstract :
We improved the spectral accuracy in asynchronous-optical-sampling THz time-domain spectroscopy (ASOPS-THz-TDS) by sweeping the mode-locked frequency in dual fiber lasers. We confirmed from THz spectroscopy of low-pressure water vapor that the achieved spectral accuracy largely exceeds the spectral resolution in ASOPS-THz-TDS.
Keywords :
fibre lasers; laser mode locking; microwave photonics; terahertz spectroscopy; terahertz wave spectra; water; ASOPS-THz-TDS; H2O; THz time-domain spectroscopy; dual fiber lasers; frequency-swept asynchronous-optical-sampling; low-pressure water vapor; mode-locked frequency; spectral accuracy; spectral resolution; Absorption; Accuracy; Laser mode locking; Optical fibers; Spectroscopy; Time domain analysis; Time frequency analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380417