Fabrication and Characterization of Ultra-fast Si-based Detectors for Near Infrared Wavelengths PDF Download
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Author: Dan Mihai Buca
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Author: Dan Mihai Buca
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Author: Allen S. Cross
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
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"This thesis is devoted to the optical characterization of Cd1-xMnxTe [(Cd,Mn)Te] semiconductor based radiation detectors. In it I present my research on the study of (Cd,Mn)Te single crystal as both a material for detection of high-energy x rays as well as for sub-picosecond voltage sensing. The work includes the practical implementation of (Cd,Mn)Te, its characterization using ultrafast spectroscopy, and comparative measurements to other competitive materials. Characterization of the voltage sensitivity of (Cd,Mn)Te is accomplished using time-resolved spectroscopy and sub-picosecond electro-magnetic pulses. My research shows that the electro-optic (EO) effect of (Cd,Mn)Te is nearly an order of magnitude greater than previously believed, and accomplishes voltage sensitivities for THz signals greater than traditional EO transducers currently available. For measurements of low-frequency signals, the results agree with the unexceptionally low textbook value; however, through various experiments studying the EO dependence on temperature, fabrication technique, and frequency, I show that the culprit for the low sensitivity at low frequency is free-carrier screening. Furthermore, testing the wavelength dependence shows that the sensitivity is enhanced for optical probe energies approaching the crystal bandgap, which in of itself, is tunable in the visible to near infrared spectrum by changing the manganese concentration. Comparative measurements to LiTaO3 are made showing the same sub-picosecond temporal resolution, but significantly greater voltage sensitivity absent of dielectric loading. I further report on the implementation of (Cd,Mn)Te photoconductive devices (PCDs) as the diagnostics x-ray detection tool used for conducting inertial confinement fusion (ICF) experiments in the OMEGA Facility at the University of Rochester's Laboratory for Laser Energetics, and compare the results to those of standard diamond PCDs. I present measurements of the (Cd,Mn)Te PCDs, intended to characterize both the temporal and spectral dependence of x-ray emissions from laser-illuminated targets during ICF experiments. The Cd0.95Mn0.05Te single crystals, doped with vanadium and annealed in Cd vapor, exhibit resistivity of [...characters removed]. A 1-mm-long and 2.3-mm-long detector is placed in the same housing as a 1-mm-long diamond PCD. Each device is preceded by a Be x-ray filter with 37% x-ray transmission at the 1-keV cutoff energy. The energy of the incident OMEGA laser pulses vary from 2.3 kJ to 28 kJ. Using targets of empty plastic shells, we observe two x-ray emission events separated by 1.24 ns: the first event is caused by heating of the shell that created a hot corona, while the second event is an x-ray emission from the fully compressed target. ICF experiments of targets with steel cores enable the analysis of time-resolved relaxation dynamics of photo-excited carriers in the (Cd,Mn)Te crystals. According to my calculations, the (Cd,Mn)Te material can effectively absorb x rays with energies of up to 200 keV. Thus, the (Cd,Mn)Te PCDs are likely to complement the diamond detectors currently used in the laser-confinement fusion experiments."--Leaves v-vi.
Author: Vinay Bhagwat
Publisher:
ISBN: 9780542106477
Category :
Languages : en
Pages : 165
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Author: Marco Ferrero
Publisher: CRC Press
ISBN: 1000415090
Category : Science
Languages : en
Pages : 196
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The book describes the development of innovative silicon sensors known as ultra-fast silicon detectors for use in the space-time tracking of charge particles. The first comprehensive collection of information on the topic, otherwise currently scattered in existing literature, this book presents a comprehensive introduction to the development of ultra-fast silicon detectors with the latest technology and applications from the field. It will be an ideal reference for graduate and postgraduates studying high energy and particle physics and engineering, in addition to researchers in the area. Key features Authored by a team of subject area specialists, whose research group first invented ultra-fast silicon detectors The first book on the topic to explain the details of the design of silicon sensors for 4-dimensional tracking Presents state-of-the-art results, and prospects for further performance evolutions The Open Access version of this book, available at www.taylorfrancis.com/e/9780367646295 , has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license.
Author:
Publisher:
ISBN:
Category : Electronics
Languages : en
Pages : 514
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Author: Hari Singh Nalwa
Publisher: Academic Press
ISBN: 0125129084
Category : Science
Languages : en
Pages : 661
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This five-volume handbook focuses on processing techniques, characterization methods, and physical properties of thin films (thin layers of insulating, conducting, or semiconductor material). The editor has composed five separate, thematic volumes on thin films of metals, semimetals, glasses, ceramics, alloys, organics, diamonds, graphites, porous materials, noncrystalline solids, supramolecules, polymers, copolymers, biopolymers, composites, blends, activated carbons, intermetallics, chalcogenides, dyes, pigments, nanostructured materials, biomaterials, inorganic/polymer composites, organoceramics, metallocenes, disordered systems, liquid crystals, quasicrystals, and layered structures. Thin films is a field of the utmost importance in today's materials science, electrical engineering and applied solid state physics; with both research and industrial applications in microelectronics, computer manufacturing, and physical devices. Advanced, high-performance computers, high-definition TV, digital camcorders, sensitive broadband imaging systems, flat-panel displays, robotic systems, and medical electronics and diagnostics are but a few examples of miniaturized device technologies that depend the utilization of thin film materials. The Handbook of Thin Films Materials is a comprehensive reference focusing on processing techniques, characterization methods, and physical properties of these thin film materials.
Author: Hari Singh Nalwa
Publisher: Elsevier
ISBN: 0080533248
Category : Technology & Engineering
Languages : en
Pages : 3451
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Book Description
This five-volume handbook focuses on processing techniques, characterization methods, and physical properties of thin films (thin layers of insulating, conducting, or semiconductor material). The editor has composed five separate, thematic volumes on thin films of metals, semimetals, glasses, ceramics, alloys, organics, diamonds, graphites, porous materials, noncrystalline solids, supramolecules, polymers, copolymers, biopolymers, composites, blends, activated carbons, intermetallics, chalcogenides, dyes, pigments, nanostructured materials, biomaterials, inorganic/polymer composites, organoceramics, metallocenes, disordered systems, liquid crystals, quasicrystals, and layered structures. Thin films is a field of the utmost importance in today's materials science, electrical engineering and applied solid state physics; with both research and industrial applications in microelectronics, computer manufacturing, and physical devices. Advanced, high-performance computers, high-definition TV, digital camcorders, sensitive broadband imaging systems, flat-panel displays, robotic systems, and medical electronics and diagnostics are but a few examples of miniaturized device technologies that depend the utilization of thin film materials. The Handbook of Thin Films Materials is a comprehensive reference focusing on processing techniques, characterization methods, and physical properties of these thin film materials.
Author: Kari Leinonen
Publisher:
ISBN: 9789522141415
Category :
Languages : en
Pages : 92
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Author: Bertram Batlogg
Publisher: World Scientific
ISBN: 9814547654
Category :
Languages : en
Pages : 738
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This volume commemorates the 10th anniversary of the discovery of high temperature superconductors (HTS). The historical framework and present status of HTS are reviewed, and the future of the field contemplated so that the HTS science can be unraveled and the HTS technology developed. This book contains the works of about 200 members of the international HTS community — from universities, government centers and laboratories, major industries and small businesses. It focuses on early and major new findings in the physics and mechanisms, materials and applications of HTS, with a projection to the emerging and future areas in science and technology.
Author: Mehdi Fardmanesh
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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