Development of sub-micron broadband lens-coupled LEKIDs for sub-mm astronomy

Alicia Gomez, P. Prieto, J. Bueno, S. Doyle, P Barry, A. Bideaud, N. Llombart Juan, D. Granados, J. L. Costa-Kramer, J. Martin-Pintado, J. J. A. Baselmans

Research output: Contribution to journalArticleScientificpeer-review


We present a fabrication method for sub-micron lens-coupled lumped element kinetic inductance detectors (LEKIDs) for broadband sub-millimeter (sub-mm) and THz radiation detection. The LEKIDs are fabricated from very thin (12 nm) and narrow (200 nm) aluminum lines to match the impedance of the LEKID to the substrate impedance. The fabrication process is based on a combination of maskless laserwriter lithography and electron beam lithography, providing low (few microns) and high resolution (down to 200 nm) over large areas in a single process. Preliminary optical characterization shows that the fabricated LEKIDs are sensitive to 1.5 THz radiation.
Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalLow Temperature Physics
Issue number1
Publication statusPublished - 2016


  • Lumped element
  • Kinetic inductance detector
  • Nanofabrication


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