Title :
Origin of intensity errors in THz-TDS measurements: Relation between beam deflection of the fs-laser and the THz-intensity fluctuations
Author :
Takeda, M. ; Tripathi, S.R. ; Aoki, M. ; Hirano, K. ; Ohtake, H. ; Hirosumi, T. ; Hiromoto, N.
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
We have estimated the intensity change in THz pulses emitted from a dipole-type photoconductive antenna as a function of the beam deflection of a pumping laser. The result shows the beam deflection affects the intensity variation of THz pulses comparable to the random errors in the THz-TDS measurements.
Keywords :
dipole antennas; fibre lasers; optical pumping; submillimetre wave antennas; submillimetre wave measurement; terahertz spectroscopy; THz-TDS measurement; THz-intensity fluctuation; beam deflection; dipole-type photoconductive antenna; fs-laser; pumping laser; Fiber lasers; Fluctuations; Laser beams; Laser excitation; Measurement by laser beam; Measurement uncertainty; Principal component analysis;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6104879
