Investigation of the propagation properties of terahertz waves through a semiconductor subwavelength slit

✍ Scribed by Xiaoyong He; Rui Li; Genwang Cai; Jiejun Cui

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 840 KB
• Volume: 284
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2011.03.068

✦ Synopsis

The propagation properties of terahertz (THz) waves through semiconductor conductor-dielectric-conductor (CDC) structure have been investigated. The influence of geometrical parameters, radiation frequencies and temperatures on the propagation properties have been shown and discussed. The contour results demonstrate that as the length of the dielectric filling materials increase, the effective indices of the propagation modes increase. Compared with the results of the metal structure, the effective indices of surface modes through semiconductor InSb slits increase, the propagation length decrease. The effective indices of the surface modes decrease, the propagation lengths increase with the increasing of the carrier concentration. It is expected that the numerical results may be very helpful to have better understand the propagation mechanism of THz waves through semiconductor subwavelength slit.