Title :
Phase shift measurement of the THz wave with laser displacement sensor
Author :
Saito, Shingo ; Sekine, Norihiko ; Hosako, Iwao ; Sakai, Kiyomi
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Kobe
Abstract :
It is an advantage of THz-TDS measurement that we can obtain not only the spectral amplitude of THz wave but the phase information without any assumptions. But, it has a difficulty in the position reproducibility of the reference mirror and sample in THz wave reflection measurement. We introduced a laser displacement sensor in order to get the reproducibility of position and measured the THz-TDS reflection signal under the position reproducibility of several micron meter.
Keywords :
measurement by laser beam; phase shifters; submillimetre wave detectors; submillimetre wave measurement; submillimetre waves; THz-TDS reflection signal; laser displacement sensor; phase shift measurement; position reproducibility; spectral amplitude; submillimetre wave; wave reflection measurement; Displacement measurement; Mirrors; Optical pulse generation; Optical pulse shaping; Optical pulses; Optical reflection; Phase measurement; Pulse measurements; Reproducibility of results; Surface emitting lasers;
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.2008.4665771
