Title :
Enhancement of terahertz optical activity with photo-excitation in metal chiral gratings
Author :
Kanda, N. ; Konishi, K. ; Kuwata-Gonokami, M.
Author_Institution :
Dept. of Appl. Phys., Univ. of Tokyo, Tokyo
Abstract :
We demonstrate the enhancement of optical activity in the terahertz frequency region with metal chiral gratings by photo-excitation of the semiconductor substrate. This result indicates the possibility of the active control of the terahertz polarization.
Keywords :
diffraction gratings; optical rotation; photoexcitation; metal chiral gratings; optical activity; photo-excitation; semiconductor substrate; terahertz frequency region; terahertz polarization; Frequency; Gratings; Magnetic materials; Metamaterials; Optical films; Optical polarization; Optical pumping; Physics; Submillimeter wave technology; Substrates;
Conference_Titel :
Nano-Optoelectronics Workshop, 2008. i-NOW 2008. International
Conference_Location :
Shonan Village
Print_ISBN :
978-1-4244-2656-0
DOI :
10.1109/INOW.2008.4634492
