Title :
Quarter waveplate at upper terahertz range based on form birefringence
Author :
Banghong Zhang ; Yandong Gong ; Notake, Takashi ; Minamide, Hiroaki
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
Quarter waveplates (QWPs) at upper terahertz range are demonstrated based on form birefringence of silicon grating. With depth of 15.5 and 8.4 μm, the gratings act as QWPs at 4.9 and 9.5 THz, respectively. The QWP is also successfully used to measure the state of polarization in a polarimetric system.
Keywords :
birefringence; diffraction gratings; elemental semiconductors; light polarisation; microwave photonics; optical retarders; polarimetry; silicon; Si; birefringence; frequency 4.9 THz; frequency 9.5 THz; polarimetric system; polarization state; quarter waveplate; silicon grating; upper terahertz range; Cadmium; Equations; Gratings;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665828
