Interferometric Measurement of Far Infrared Plasmons via Resonant Homodyne Mixing

10 May 2016  ·  Dyer Gregory C., Aizin Gregory R., Allen S. James, Grine Albert D., Bethke Don, Reno John L., Shaner Eric A. ·

We present an electrically tunable terahertz two dimensional plasmonic interferometer with an integrated detection element that down converts the terahertz fields to a DC signal. The integrated detector utilizes a resonant plasmonic homodyne mixing mechanism that measures the component of the plasma waves in-phase with an excitation field functioning as the local oscillator... Plasmonic interferometers with two independently tuned paths are studied. These devices demonstrate a means for developing a spectrometer-on-a-chip where the tuning of electrical length plays a role analogous to that of physical path length in macroscopic Fourier transform interferometers. read more

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Mesoscale and Nanoscale Physics Optics