Abstract
It is analytically shown that the presence of submicrometer-sized air gaps between the dielectric and metal contact surfaces in a dielectric-filled metallic parallel-plate waveguide can have a dramatic effect on the guided-wave propagation of subpicosecond terahertz pulses. Through the use of metal-evaporated dielectric surfaces to overcome the imperfect contact problem, and a special air–dielectric–air cascaded waveguide geometry to avoid multimode excitation, undistorted subpicosecond terahertz pulse propagation via the single-TEM mode is demonstrated, for what is believed to be the first time, in a silicon-filled PPWG.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
R. Mendis and D. Grischkowsky
Opt. Lett. 26(11) 846-848 (2001)
Rajind Mendis and Daniel M. Mittleman
Opt. Express 17(17) 14839-14850 (2009)
D. G. Cooke and P. Uhd Jepsen
Opt. Express 16(19) 15123-15129 (2008)