Title :
Terahertz Polarization Imaging using <110> ZnTe Crystal
Author :
Zhang, LiangLiang ; Zhang, Yan ; Zhang, Cunlin ; Zhao, Yuejin ; Liu, Xiaohua
Abstract :
We present a method to measure the polarization state of pulsed terahertz wave by using a typical electro-optic sampling setup with <110> ZnTe crystal as sensor. To illustrate that the knowledge of the polarization of the terahertz pulse is essential for interpreting the results, we did terahertz imaging of a plastic plate. We find the terahertz electric field vector is revolved by the scattering at the edge of the sample. Terahertz polarization imaging is sensitive to the edge of the object and therefore can be used to raise the spatial resolution and improve the quality of terahertz images.
Keywords :
electromagnetic wave polarisation; electromagnetic wave scattering; image sensors; submillimetre wave imaging; submillimetre wave measurement; zinc compounds; ZnTe; crystal sensor; edge scattering; electric field vector; electro-optic sampling; plastic plate; pulsed terahertz polarization imaging; Electrooptic devices; Optical imaging; Plastics; Polarization; Pulse measurements; Sampling methods; Scattering; Spatial resolution; Submillimeter wave measurements; Zinc compounds;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368641