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We present the performance of a superconducting nanowire that can be operated in two detection modes: (i) as a kinetic inductance detector (KID) or (ii) as a single-photon detector (SPD). Two superconducting nanowires developed for use as single-photon detectors (SNSPDs) are embedded as the inductive (L) component in resonant inductor/capacitor (LC) circuits coupled to a microwave transmission line...
Now in Phase II of the NASA Innovative Advanced Concepts (NIAC) Program, our team is advancing key technologies required to realize a suborbital, 10 meter class telescope suitable for operation from radio to THz frequencies. The telescope consists of an inflatable, half-aluminized spherical reflector deployed within a much larger carrier balloon — either zero pressure or super pressure.
We present measurements from a prototype array of superconducting kinetic inductance detectors optimized for 150 GHz radiation and commercially fabricated from 20 nm aluminum films on silicon wafers.
We present the design concept and our latest simulation results for a novel low (R∼100) to moderate (R∼1000) resolution multi-pixel direct detection spectrometer operating at millimeter (mm) and submillimeter (submm) wavelengths. This design implements a transmission line filter bank using rectangular waveguide resonant cavities as a series of frequency filters, each terminated by a lumped-element...
SuperCam is a 64-pixel heterodyne imaging array designed for use on ground-based submillimeter telescopes to observe the astrophysically important CO J=3–2 emission line at 345 GHz. Each pixel in the array has its own integrated superconductor-insulator-superconductor (SIS) mixer and low noise amplifier. In spring 2012, SuperCam was installed on the University of Arizona Submillimeter Telescope (SMT)...
We report on the laboratory testing of KAPPa, a 16-pixel proof-of-concept array to enable the creation THz imaging spectrometer with −1000 pixels. Creating an array an order of magnitude larger than the existing state of the art of 64 pixels requires a simple and robust design as well as improvements to mixer selection, testing, and assembly. We present the characterization of the single pixel prototype,...
Here we present the methodology and initial results for a new near-field antenna measurement system for sub-millimeter and terahertz receivers. The system is based on a 4-port VNA with two internal sources, which offers reduced complexity and cost when compared to previous systems.
Under the auspices of the NASA Innovative Advanced Concepts (NIAC) Program our team is developing and demonstrating key technologies required to realize a suborbital, 10 meter class telescope suitable for operation from radio to THz frequencies. The telescope consists of an inflatable, half-aluminized spherical reflector deployed within a much larger carrier balloon — either zero pressure or super...
A cryogenically cooled low noise amplifier (LNA) has been designed, built and tested at the Astronomy Instrumentation Laboratory at Arizona State University. The LNA uses low cost, off the shelf commercially available low noise SiGe hetero junction bipolar transistor (HBT) in a single stage surface mount package. The built LNA has been measured in a calibrated noise/gain/S-parameters setup and the...
Under the auspices of the NASA Innovative Advanced Concepts (NIAC) Program, the University of Arizona, Southwest Research Institute, Jet Propulsion Laboratory, Arizona State University, and Johns Hopkins Applied Research Laboratory are developing and demonstrating key technologies required to realize a suborbital, 10 meter class telescope suitable for operation from radio to THz frequencies. The telescope...
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