Understanding and minimizing resonance frequency deviations on a 4-inch kilo-pixel kinetic inductance detector array
arXiv:2105.14046 · doi:10.1063/5.0058335
Abstract
One of the advantages of kinetic inductance detectors is their intrinsic frequency domain multiplexing capability. However, fabrication imperfections usually give rise to resonance frequency deviations, which create frequency collision and limit the array yield. Here we study the resonance frequency deviation of a 4-inch kilo-pixel lumped-element kinetic inductance detector (LEKID) array using optical mapping. Using the measured resonator dimensions and film thickness, the fractional deviation can be explained within , whereas the residual deviation is due to variation of electric film properties. Using the capacitor trimming technique, the fractional deviation is decreased by a factor of 14. The yield of the trimming process is found to be 97%. The mapping yield, measured under a 110~K background, is improved from 69% to 76%, which can be further improved to 81% after updating our readout system. With the improvement in yield, the capacitor trimming technique may benefit future large-format LEKID arrays.
arXiv comment6 pages, 7 figures, MAJOR update
References in corpus (10)
- The NIKA2 large field-of-view millimeter continuum camera for the 30-m IRAM telescope
- The NIKA2 instrument, a dual-band kilopixel KID array for millimetric astronomy
- Calibration and Performance of the NIKA2 camera at the IRAM 30-meter Telescope
- NIKEL_AMC: Readout electronics for the NIKA2 experiment
- Mitigation of Cosmic Ray Effect on Microwave Kinetic Inductance Detector Arrays
- The MKID Exoplanet Camera for Subaru SCExAO
- Millimeter-Wave Polarimeters Using Kinetic Inductance Detectors for TolTEC and Beyond
- Thermal Kinetic Inductance Detectors for millimeter-wave detection
- Increased multiplexing of superconducting microresonator arrays by post-characterization adaptation of the on-chip capacitors
- Prototype high angular resolution LEKIDs for NIKA2