title: Enhanced coupling of subterahertz radiation with semiconductor periodic slot arrays.
abstract: In this work, a theoretical study of the coupling of TM polarized subterahertz (THz) radiation with periodic semiconductor rectangular slot arrays was conducted, using InSb as an example. Simulation results showed that the structure with 4-12 microm thickness provides over a 20-30-fold increase in the electric field at slot edges in a nanosize region ( approximately 500 nm). The enhancement of the THz electromagnetic field extends across the slots and reaches peak values at the edges due to discontinuity effects. Because of the strong local electromagnetic field enhancement, the structure can potentially be used for the development of novel biophotonic sensors, leading to improved detection sensitivity.
authors.affiliation: Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia 22904, USA.
authors.forename: Ramakrishnan
authors.initials: R
authors.lastname: Parthasarathy
authors.forename: Alexei
authors.initials: A
authors.lastname: Bykhovski
authors.forename: Boris
authors.initials: B
authors.lastname: Gelmont
authors.forename: Tatiana
authors.initials: T
authors.lastname: Globus
authors.forename: Nathan
authors.initials: N
authors.lastname: Swami
authors.forename: Dwight
authors.initials: D
authors.lastname: Woolard
mesh_terms: D000965:Antimony / Q000737:chemistry*; D003198:Computer Simulation; D007204:Indium / Q000737:chemistry*; D008962:Models, Theoretical; D011840:Radiation, Nonionizing; D012666:Semiconductors; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D007204:Indium; D000965:Antimony