Enhanced responsivity resonant RF photodetectors

R. Liu, S. Dev, Y. Zhong, R. Lu, W. Streyer, J. W. Allen, M. S. Allen, B. R. Wenner, S. Gong, D. Wasserman

Research output: Contribution to journalArticlepeer-review


The responsivity of room-temperature, semiconductor-based photodetectors consisting of resonant RF circuits coupled to microstrip buslines is investigated. The dependence of the photodetector response on the semiconductor material and RF circuit geometry is presented, as is the detector response as a function of the spatial position of the incident light. We demonstrate significant improvement in detector response by choice of photoconductive material, and for a given material, by positioning our optical signal to overlap with positions of RF field enhancement. Design of RF circuits with strong field enhancement are demonstrated to further improve detector response. The improved detector response demonstrated offers opportunities for applications in RF photonics, materials metrology, or single read-out multiplexed detector arrays.

Original languageEnglish (US)
Pages (from-to)26044-26054
Number of pages11
JournalOptics Express
Issue number23
StatePublished - Nov 14 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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