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Development Of 15 Micron Cutoff Wavelength Hgcdte Detector Arrays For Astronomy
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Book Synopsis Development of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy by : Mario Cabrera
Download or read book Development of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy written by Mario Cabrera and published by Springer Nature. This book was released on 2020-09-17 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes advances in the understanding of HgCdTe detectors. While long wave (15 μm) infrared detectors HgCdTe detectors have been developed for military use under high background irradiance, these arrays had not previously been developed for astronomical use where the background irradiance is a billion times smaller. The main pitfall in developing such arrays for astronomy is the pixel dark current which plagues long wave HgCdTe. The author details work on the success of shorter wavelength development at Teledyne Imaging Sensors, carefully modeling the dark current–reverse bias voltage curves of their 10 μm devices at a temperature of 30K, as well as the dark current–temperature curves at several reverse biases, including 250 mV. By projecting first to 13 and then 15 μm HgCdTe growth, values of fundamental properties of the material that would minimize tunneling dark currents were determined through careful modeling of the dark current-reverse bias voltage curves, as well as the dark current-temperature curves. This analysis was borne out in the 13 μm parts produced by Teledyne, and then further honed to produce the necessary parameters for the 15 μm growth. The resulting 13 μm arrays are being considered by a number of ground-based astronomy research groups.
Book Synopsis Development of 15 Μm Cutoff Wavelength HgCdTe Detector Arrays for Astronomy by : Mario Salvador Cabrera
Download or read book Development of 15 Μm Cutoff Wavelength HgCdTe Detector Arrays for Astronomy written by Mario Salvador Cabrera and published by . This book was released on 2020 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterizing Large Format 10 [mu]m Cutoff Detector Arrays for Low Background Space Applications by : Meghan L. Dorn
Download or read book Characterizing Large Format 10 [mu]m Cutoff Detector Arrays for Low Background Space Applications written by Meghan L. Dorn and published by . This book was released on 2019 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis discusses the ongoing development of large format 2k x 2k pixel 10 [mu]m cutoff wavelength HgCdTe detector arrays for low background space applications. This collaboration among Teledyne Imaging Sensors (TIS), University of Rochester, and NASA JPL seeks to determine the performance of the latest arrays that were produced by TIS for the NEOCam space mission, and characterize the image quality. Analysis of the dark current mechanisms of one array shows that these detector arrays are limited by thermal diffusion current down to ~ 42 K, have some contribution of thermal G-R current down to 41 K, then limited by a 0.2 e−/s light leak in our dewar. The trap-to-band tunneling current that has been the limiting mechanism for a previous generation of detectors is not significant at the applied reverse bias required by NEOCam. In order to demonstrate the ability of these detectors to operate in a space-like environment, proton testing was conducted at the University of California Davis Crocker Nuclear Laboratory. During proton irradiation, the 1k x 1k detector array whose substrate thickness is now the baseline had no measurable substrate luminescence, and the pixels that were hit by a proton recovered after reset. The total operability decreased by a few percent after a cumulative lifetime dose of irradiation, but was still above the NEOCam requirement of >90%. We also assessed the temperature stability and found that the noise measured while the temperature is fluctuating ł50 mK was the same as measured at a constant temperature. Finally in order to assess the probable image quality, we measured the MTF and the effect of residual images"--Pages viii-ix.
Author :James David Garnett Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :576 pages Book Rating :4.3/5 (91 download)
Book Synopsis Optical and Infrared Detectors for Astronomy by : James David Garnett
Download or read book Optical and Infrared Detectors for Astronomy written by James David Garnett and published by SPIE-International Society for Optical Engineering. This book was released on 2004 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Book Synopsis Integrated Technology Plan for the Civil Space Program by : United States. National Aeronautics and Space Administration
Download or read book Integrated Technology Plan for the Civil Space Program written by United States. National Aeronautics and Space Administration and published by . This book was released on 1991 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Literature 1987, Part 2 by : U. Esser
Download or read book Literature 1987, Part 2 written by U. Esser and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts aims to present a comprehensive documen tation of the literature concerning all aspects of astronomy, astrophysies, and their border fields. It is devoted to the recording, summarizing, and indexing of the relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union. Volume 44 records literature published in 1987 and received before February 15, 1988. Some older documents which we received late and which are not surveyed in earlier volumes are inc1uded too. We acknowledge with thanks contributions of our colleagues all over the world. We also express our gratitude to all organiza tions, observatories, and publishers which provide us with complimentary copies of their publications. Dr. Siegfried Böhme retired from his duties as co-editor of Astronomy and Astro physics Abstracts on December 31, 1987. Since 1950 he partieipated in the biblio graphie work of the institute. He served as a reviewer for the Astronomischer Jahresbericht and became one of the editors of Astronomy and Astrophysics Ab stracts in 1969. After his retirement in 1975 he took care of, particularly, the Russian literature on a voluntary basis for 12 years. It is a pleasure to thank Siegfried Böhme for his valuable contributions. Starting with Volume 33, all the recording, correction, and data processing work was done by means of computers. The recording was done by our technical staff members Ms. Helga Ballmann, Ms. Christiane Jehn, Ms. Monika Kohl, Ms.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722159313 Total Pages :46 pages Book Rating :4.1/5 (593 download)
Book Synopsis Development of 256 X 256 Element Impurity Band Conduction Infrared Detector Arrays for Astronomy by : National Aeronautics and Space Administration (NASA)
Download or read book Development of 256 X 256 Element Impurity Band Conduction Infrared Detector Arrays for Astronomy written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work performed on a one and a half year advance technology program to develop Impurity Band Conduction (IBC) detectors with very low dark current, high quantum efficiency, and with good repeatable processes. The program fabricated several epitaxial growths of Si: As detecting layers from 15 to 35 microns thick and analyzed the performance versus the thickness and the Arsenic concentration of these epitaxial layers. Some of the epitaxial runs did not yield because of excessive residual impurities. The thicker epitaxial layers and the ones with higher Arsenic concentration resulted in good detectors with low dark currents and good quantum efficiency. The program hybridized six detector die from the best detector wafers to a low noise, 256 x 256 readout array and delivered the hybrids to NASA Ames for a more detailed study of the performance of the detectors. Domingo, George Ames Research Center NAS2-14321..
Book Synopsis Infrared and Photoelectronic Imagers and Detector Devices by :
Download or read book Infrared and Photoelectronic Imagers and Detector Devices written by and published by . This book was released on 2006 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Astronomy and Astrophysics Abstracts by : S. Böhme
Download or read book Astronomy and Astrophysics Abstracts written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundamental publications in the fields of astronomy, astrophysics and neighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. ... The abstracts are classified under more than hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world." Space Science Reviews #1 "Dividing the whole field plus related subjects into 108 categories, each work is numbered and most are accompanied by brief abstracts. Fairly comprehensive cross-referencing links relevant papers to more than one category, and exhaustive author and subject indices are to be found at the back, making the catalogues easy to use. The series appears to be so complete in its coverage and always less than a year out of date that I shall certainly have to make a little more space on those shelves for future volumes." The Observatory Magazine #1
Author :Craig Ralph McCreight Publisher :SPIE-International Society for Optical Engineering ISBN 13 :9780819450401 Total Pages :352 pages Book Rating :4.4/5 (54 download)
Book Synopsis Focal Plane Arrays for Space Telescopes by : Craig Ralph McCreight
Download or read book Focal Plane Arrays for Space Telescopes written by Craig Ralph McCreight and published by SPIE-International Society for Optical Engineering. This book was released on 2004 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1990 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Large Area PV HgCdTe Detectors for 10.6 Micrometers by : P. R. Bratt
Download or read book Development of Large Area PV HgCdTe Detectors for 10.6 Micrometers written by P. R. Bratt and published by . This book was released on 1980 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this program was to develop large area PV HgCdTe detectors for laser receiver systems operating at 10.6 micrometer. The work accomplished included: growth of HgCdTe single-crystal material by two different methods; design and fabrication of quadrant detector arrays with elemental areas of 1 x 1 mm square and 2 x 2 mm square per quadrant; test and evaluation of quadrant arrays; and packaging of quadrant arrays in evacuated glass/metal dewars with J-T cryostats for cooling and four-channel preamplifiers for laboratory or field operation. HgCdTe crystals were produced by both zone melting and solid-state recrystallization processes. Either technique yielded sufficient single-crystal material to fabricate the large area arrays in monolithic form. The uniformity of alloy composition was adequate to give nearly identical spectral response characteristics for each detector quadrant. (Author).
Book Synopsis Proceedings of an ESA Symposium on Photon Detectors for Space Instrumentation by : T. D. Guyenne
Download or read book Proceedings of an ESA Symposium on Photon Detectors for Space Instrumentation written by T. D. Guyenne and published by . This book was released on 1992 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ESO Conference on Very Large Telescopes and Their Instrumentation, Garching, 21-24 March 1988 by : M. H. Ulrich
Download or read book ESO Conference on Very Large Telescopes and Their Instrumentation, Garching, 21-24 March 1988 written by M. H. Ulrich and published by . This book was released on 1988 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Infrared Detectors by : Antonio Rogalski
Download or read book Infrared Detectors written by Antonio Rogalski and published by CRC Press. This book was released on 2010-11-15 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and reorganized while retaining the approachable style of the first edition, Infrared Detectors, Second Edition addresses the latest developments in the science and technology of infrared (IR) detection. Antoni Rogalski, an internationally recognized pioneer in the field, covers the comprehensive range of subjects necessary to un
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