Craig W. McMurtry

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During the expected 5+ years of operation, the Spitzer Space Telescope is and will continue to produce outstanding infrared images and spectra, and greatly further scientific understanding of our universe. The Spitzer Space Telescope’s instruments are cryogenically cooled to achieve low dark current and low noise. After the cryogens are exhausted, the(More)
The James Webb Space Telescope (JWST) will have several on-board instruments, of which the Mid-Infrared Instrument (MIRI) will cover imaging and low resolution spectroscopy in the 5-28 micron region. To achieve the many science goals for MIRI, the detector arrays must be capable of achieving high sensitivity. The primary obstacle to high sensitivity is the(More)
In this work, a new detection method for Terahertz (THz) radiation in a MOSFET transistor based on Thermionic Emission (TE) has been demonstrated. Theoretical analysis and experimental data have shown that under sub-threshold biasing conditions, the detection of THz signals from thermionic emission through a potential barrier between the highly doped source(More)
Optics, Photonics, and Imaging 1 Terahertz Techniques Based on Laser-Induced Microplasmas Fabrizio Buccheri, Institute of Optics, University of Rochester Ambient air becomes a source of ultrabroadband terahertz pulses and an ultrafast terahertz sensor when ionized by femtosecond laser fields. The integration of such a plasma source and sensor in terahertz(More)
The Near Earth Object Camera (NEOCam) is a proposed infrared space mission designed to discover and characterize most of the potentially hazardous asteroids larger than 140 m in diameter that orbit near the Earth. NASA has funded technology development for NEOCam, including the development of long wavelength infrared detector arrays that will have excellent(More)
We present a new determination of the intergalactic C iv mass density at 4.3 < z < 6.3. Our constraints are derived from high signal-to-noise spectra of seven quasars at z > 5.8 obtained with the newly commissioned FIRE spectrograph on the Magellan Baade telescope, coupled with six observations of northern objects taken from the literature. We confirm the(More)
With the introduction of the Raytheon 2.5 micron HgCdTe VIRGO detector array, some astronomy programs, such as the VISTA Program, are turning to Raytheon for near infrared detector arrays. We characterize one VIRGO detector array and provide results of measurements at low backgrounds including dark current, read noise, total noise, quantum efficiency, and(More)
Condensate clouds are a salient feature of L dwarf atmospheres, but have been assumed to play little role in shaping the spectra of the coldest T-type brown dwarfs. Here we report evidence of condensate opacity in the near-infrared spectrum of the brown dwarf candidate Ross 458C, obtained with the Folded-Port Infrared Echellette (FIRE) spectrograph at the(More)
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