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9 May 2012 Resonant bolometric subterahertz detection in a 2D plasmonic cavity
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The two-dimensional plasma resonance excited in the channel of a field effect transistor has recently been utilized as the frequency-selective absorber in a monolithic far infrared plasmonic cavity detector. In this article we discuss the relevant parameters pertaining to engineering the plasmonic cavity and an integrated detection element as constituent elements of a resonant far infrared detector. The spectra of low-order plasmon modes in 18 μm and 34 μm long two-dimensional plasmonic cavities with 4 μm period grating gates have been measured. When the length of the plasma cavity is significantly larger than the gate length or period, the cavity length rather than grating period defines the plasmon wavevector. Electronic noise sources are considered; random telegraph noise is suggested as a dominant noise source when the device is operated as a highly resistive bolometric detector.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. C. Dyer, G. R. Aizin, A. D. Grine, J. L. Reno, J. M. Hensley, S. J. Allen, and E. A. Shaner "Resonant bolometric subterahertz detection in a 2D plasmonic cavity", Proc. SPIE 8363, Terahertz Physics, Devices, and Systems VI: Advanced Applications in Industry and Defense, 83630T (9 May 2012);

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