Title :
Terahertz supermirrors
Author :
Han, Y. ; Cho, M. ; Park, H. ; Lim, M. ; Jung, E. ; Moon, K. ; Han, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Pohang Univ. of Sci. & Technol., Pohang, South Korea
Abstract :
Unprecedented ultrahigh-reflectance (R > 0.9995) in a one-dimensional photonic crystal (1D PC) mirror was experimentally demonstrated by using a terahertz time-domain spectroscopy (THz-TDS). The PC mirror was composed of three air gaps and four high-resistivity float zone (FZ) silicon layers, prepared by a high precision chemical mechanical polishing (CMP) machine. The power reflectance of 1D PC mirror is comparable to those of optical supermirrors (R > 0.9997).
Keywords :
chemical mechanical polishing; elemental semiconductors; microwave photonics; mirrors; optical fabrication; photonic crystals; reflectivity; silicon; terahertz spectroscopy; Si; THz-TDS; high-precision chemical mechanical polishing; high-resistivity float zone silicon layers; one-dimensional photonic crystal mirror; terahertz supermirrors; terahertz time-domain spectroscopy; ultrahigh-reflectance mirror; Air gaps; Mirrors; Optical films; Optical filters; Optical refraction; Optical variables control; Photonic band gap; Pulse measurements; Reflectivity; Silicon;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325513
