Title :
Phase-slope measurement of tunable CW-THz radiation and application for distance measurement of optically rough object
Author :
Yasui, Takeshi ; Fujio, Makoto ; Nakamura, Ryotaro ; Yokoyama, Shuko ; Araki, Tsutomu
Author_Institution :
Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka, Japan
Abstract :
We demonstrate phase-slope measurement of tunable CW-THz radiation by photoconductive heterodyne detection with a photocarrier THz comb. Distance of optically rough object is determined from the measured phase-slope within accuracy of 100 μm.
Keywords :
distance measurement; heterodyne detection; surface roughness; distance measurement; optically rough object; phase-slope measurement; photocarrier THz comb; photoconductive heterodyne detection; tunable CW-THz radiation; Adaptive optics; Antenna measurements; Optical interferometry; Optical mixing; Optical scattering; Optical variables measurement; Phase measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
