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Recent Developments and Applications of Quantum Well Infrared Photodetector Focal Plane Arrays
One of the simplest device realizations of the classic particle-in-the-box problem of basic quantum mechanics is the Quantum Well Infrared Photodetector (QWIP).
Long-wavelength 640x484 GaAs/Al x Ga 1-x As Quantum Well Infrared Photodetector Focal Plane Array Camera
A hand-held quantum well infrared photodetector camera has been demonstrated.
640x486 Long-Wavelength Two-Color GaAs/AlGaAs Quantum Well Infrared Photodetector (QWIP) Focal Plane Array Camera
An optimized long-wavelength very long-wavelength two-color Quantum Well Infrared Photodetector (QWIP) device structure has been designed.
Commercialization of Quantum Well Infrared Photodetector QWIP Focal Plane Arrays
Many commercial and government applications need high performance, large format, long-wavelength infrared (LWIR) detector arrays in the range of 6-20 mu.
Characterization of OSAM-1 Fixed Focal Length Cameras
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Focal mechanisms of microseismicity at the Decatur, Illinois, CCS site inverted from borehole seismic arrays
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Hierarchical Phased-Array Antennas Coupled to Al KIDs: A Scalable Architecture for Multi-band Millimeter/Submillimeter Focal Planes
We present the optical characterization of two-scale hierarchical phased-array antenna kinetic inductance detectors (KIDs) for millimeter/submillimeter wavelengths. Our KIDs have a lumped-element architecture with parallel plate capacitors and aluminum inductors. The incoming light is received with a hierarchical phased array of slot dipole antennas, split into 4 frequency bands (between 125 GHz and 365 GHz) with on-chip lumped-element band-pass filters, and routed to different KIDs using microstriplines. Individual pixels detect light for the 3 higher-frequency bands (190–365 GHz), and the signals from four individual pixels are coherently summed to create a larger pixel detecting light for the lowest frequency band (125–175 GHz). The spectral response of the band-pass filters was measured using Fourier transform spectroscopy (FTS), the far-field beam pattern of the phased-array antennas was obtained using an infrared source mounted on a 2-axis translating stage, and the optical efficiency of the KIDs was characterized by observing loads at 294 K and 77 K. We report on the results of these three measurements.
The Focal-plane Actualized Shifted Technique Realized for a Shack Hartmann Wavefront Sensor (fastrSHWFS)
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Developing a Wynne Corrector for higher spectral bandwidth focal plane wavefront sensing
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Machine learning-aided automatic and precise focal length estimation of multilayer Laue lenses for high-resolution hard x-ray microscopy
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CTN-001: LSSTCam and LSSTComCam Focal Plane Layouts
This document includes figures depicting the layouts of the LSST Camera and LSST Commissioning Camera, highlighting the arrangement and identification of science, wavefront, and guider sensors, as well as their individual readout image segments.
The role of microorganisms in the weathering of rocks. 2 - Focal distribution of microorganisms on the surface of rocks
Microorganism growth in synthetic medium using rock as mineral nutrient source, and rock weathering due to microorganisms
Electronics for a focal plane crystal spectrometer
The HEAO-B program forced the usual constraints upon the spacecraft experiment electronics: high reliability, low power consumption, and tight packaging at reasonable cost. The programmable high voltage power supplies were unique in both application and simplicity of manufacture. The hybridized measurement chain is a modification of that used on the SAS-C program; the charge amplifier design in particular shows definite improvement in performance over previous work.
Focal plane transport assembly controls for the High Energy Astronomy Observatory X-ray telescope
The High Energy Astronomy Observatory - Mission B (HEAO-B) is a satellite observatory for the purpose of performing a detailed X-ray survey of the celestial sphere. Measurements will be made of stellar radiation in the range of 0.2 to 20 keV. The central part of the Observatory is an X-ray telescope, into the focus of which a variety of imaging instruments and spectrographs may be introduced. The telescope has a resolution of about 1 arc second, so that the instruments must be placed with extreme precision. This is obtained by a mechanical system of toggles and stops and a motor drive system controlled by a position sensing potentiometer with a resolution of about 1.5 degrees