title: Demonstration of terahertz frequency-dependent field transformation in an irregular waveguide structure with direct measurement of the internal electric fields.
abstract: We demonstrate irregular scattering structure frequency-dependent field control at terahertz frequencies by means of a TM(10) to TM(30) mode converter designed for operation near 300 GHz and fabricated out of lithium niobate. Imaging of the electric fields in the sample, with a Fourier analysis of the time domain signal, yielded the performance as a function of frequency.
authors.affiliation: Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
authors.forename: E R
authors.initials: ER
authors.lastname: Statz
authors.forename: K-H
authors.initials: KH
authors.lastname: Lin
authors.forename: K A
authors.initials: KA
authors.lastname: Nelson
authors.forename: M
authors.initials: M
authors.lastname: Yang
authors.forename: K J
authors.initials: KJ
authors.lastname: Webb