Abstract-Full vector measurements of converging terahertz beams with linear, circular, and cylindrical vortex polarization

Xinke Wang, Sen Wang, Zhenwei Xie, Wenfeng Sun, Shengfei Feng, Ye Cui, Jiasheng Ye, and Yan Zhang  »View Author Affiliations

Optics Express, Vol. 22, Issue 20, pp. 24622-24634 (2014)
http://dx.doi.org/10.1364/OE.22.024622

http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-20-24622

The complete vector information of converging terahertz (THz) beams with linear, circular, and cylindrical vortex polarization are precisely measured by using a THz digital holographic imaging system. The transverse (Ex, Ey) and longitudinal (Ez) polarization components of the THz fields around the focal point are separately obtained utilizing the detection crystals with different crystalline orientations. The measured results are in good agreement with the theoretical expectations. This imaging technique provides an effective way for revealing the vector diffraction properties of the THz electro-magnetic waves.

© 2014 Optical Society of America