Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"high energy laser"”.
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High Energy Laser Driven Electron Acceleration
… was carried out looking into the process of laser wakefield acceleration of electrons, for the possible application to the generation of multi-MeV γ-rays via nonlinear Thomson scattering. The effects of introducing a gas density gradient just after the accelerating gas cell was tested with …
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Adaptive optics for high energy laser systems
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Distance support in-service engineering for the high energy laser
The U.S. Navy anticipates moving to a shipboard high-energy laser program of record in the fiscal year 2018 and achieving an initial operational capability by 2020. The design of a distance support capability within the high-energy laser system was expected to assist the Navy in reaching this goal. …
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Investigation of the acoustic source characteristics of high energy laser pulses models and experiment
… thesis was motivated by the possibility of using high energy laser pulses as an acoustic source for naval applications. Research conducted in the 1970's and 80's shows that sound production from laser pulses is most efficient when the energy density of the pulse exceeds the threshold required for …
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TOF-based diagnostics system development and Geant4 simulation of the ELIMED transport and dosimetry beam line for high energy laser-driven ion beam applications @ ELI Beamlines
… processes based on the coherent interaction of high-power laser with matter is by now one of the most interesting topics in the field of particle acceleration, becoming a real alternative to conventional approaches. Some of the peculiarities of laser accelerated ion beams, if well controlled, …
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Study on the combined use of high-energy laser and manual therapy in patients with functional thoracic spine disorders // Проучване на комбинираното приложение на високоенергиен лазер и мануална терапия при пациенти с функционални нарушения в торакален отдел
… the clinical effectiveness of combining high-energy laser and manual therapy in patients with functional thoracic spine disorders. Functional disorders in the thoracic spine are discussed as the leading cause of pain and limited range of motion in this area. The currently available …
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Comparative Study of the Effects of Conventional Physiotherapeutic Complex and High-Energy Laser in Patients with Glenohumeral Joint Peritendinitis // Сравнително проучване на ефектите на конвенционален физиотерапевтичен комплекс и високоенергиен лазер при пациенти с перитендинит на гленохумерална става
… improvement, of Multiwave Locked System (MLS) laser energy treatment and the combined therapy of microwave diathermy and interference current, in patients with glenohumeral joint peritendinitis. Data from 76 patients with acute glenohumeral joint peritendinitis were prospectively collected. The …
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Thermomechanical effects of ground-based directed energy weapons on satellites and Intercontinental Ballistic Missiles
… aspects of two generic models loaded by high energy laser beam. We present an application of MSC software in modeling thermo-mechanical behavior, both steady state and transient behavior of satellite and missile structures. Thermal energies used for simulation correspond to high energy …
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OligoChannel Spectral Analysis in stereotactic laser neurosurgery
In stereotactic laser neurosurgery a tumor in the human brain is resected by a pulsed high energy laser beam. The laser beams for diagnosis and ablation of cancerous tissue are supplied through a probe. The whole resection is planned with a computer system. These planning data are based on …
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Laser micromachining of active and passive photonic integrated circuits
This thesis describes the development of advanced laser resonators and applications of laser-induced micromachining for photonic circuit fabrication. Two major advantages of laser-induced micromachining are direct patterning and writing on large areas of substrates at high speed following the …
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Sintering and Characterizations of 3D Printed Bronze Metal Filament
Metal 3D printing typically requires high energy laser or electron sources. Recently, 3D printing using metal filled filaments becomes available which uses PLA filaments filled with metal powders (such as copper, bronze, brass, and stainless steel). Although there are some studies on their …
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Determination of thermo-optic coefficient for B2O3 and GeO2 co-doped optical silica fiber
… number reduces when raising the temperature for high-energy laser applications.
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Influence of Induced natural convection on laser propagation : analysis and interferometric visualization
… natural convection flow on the propagation of a high energy laser beam. The two configurations considered are of a vertical laser beam (propagation direction opposite to gravity) and a horizontal laser beam (gravity acting in a direction perpendicular to propagation) traveling through an infinite …
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Polarimetry Of Random Fields
… traditional polarimetric approaches to include higher order field correlations and the description of fields fluctuating in three dimensions. In relation to characterization of depolarizing media, a number of fourth-order correlations are introduced in this dissertation. Measurements of full …
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Demonstration of filament-guided electrical discharges from a high average power 1 kHz picosecond laser
The atmospheric propagation of ultrashort, high energy laser pulses is of interest for applications including remote sensing, directed energy, and the guiding of lightning. In this thesis, the filamentation of high energy picosecond laser pulses at repetition rates up to 1 kHz is demonstrated and …
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Spray Cooling For Land, Sea, Air And Space Based Applications, A Fluid Managment System For Multiple Nozzle Spray Cooling And A Guide To High Heat Flux Heater Design
… disadvantages that spray cooling has over other high heat flux cooling techniques. Chapter two outlines the developmental goals of spray cooling, which are to increase the output of a current system and to enable new technologies to be technically feasible. Furthermore, this chapter outlines in …