Multiplexed infrared photodetection using resonant radio-frequency circuits

R. Liu, R. Lu, C. Roberts, S. Gong, J. W. Allen, M. S. Allen, B. R. Wenner, D. Wasserman

Research output: Contribution to journalArticlepeer-review


We demonstrate a room-temperature semiconductor-based photodetector where readout is achieved using a resonant radio-frequency (RF) circuit consisting of a microstrip split-ring resonator coupled to a microstrip busline, fabricated on a semiconductor substrate. The RF resonant circuits are characterized at RF frequencies as function of resonator geometry, as well as for their response to incident IR radiation. The detectors are modeled analytically and using commercial simulation software, with good agreement to our experimental results. Though the detector sensitivity is weak, the detector architecture offers the potential for multiplexing arrays of detectors on a single read-out line, in addition to high speed response for either direct coupling of optical signals to RF circuitry, or alternatively, carrier dynamics characterization of semiconductor, or other, material systems.

Original languageEnglish (US)
Article number061101
JournalApplied Physics Letters
Issue number6
StatePublished - Feb 8 2016

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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