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.
Results
Showing 1 to 20 of 266 for “"pulsed laser"”.
-
Femtosecond pulsed laser deposition
… investigates two variations of the conventional pulsed laser deposition (PLD) technique. The first technique is femtosecond PLD, whereby the laser used to ablate the target has a significantly higher peak intensity and shorter pulse duration as compared to conventional nanosecond lasers more …
-
Pulsed Laser Deposition of Thin Film Heterostructures
… and Lanthanum Aluminate (100) substrates by pulsed laser deposition. X-ray diffraction results show that the films grown on the Strontium Titanate are amorphous and polycrystalline on the Lanthanum Aluminate. Resistances versus temperature measurements show that the films exhibit …
-
Pulsed laser annealing and characterization of GaAs substrates
Call number: LD2668 .T4 EECE 1989 S55
-
Pulsed laser annealing and characterization of GaAs substrates
Call number: LD2668 .T4 EECE 1989 S55
-
Planar waveguide devices fabricated by pulsed laser deposition
… to be a comprehensive study on the use of pulsed laser deposition to fabricate planar waveguide devices. As such, a thorough review into the state of the art of current activities in this area is initially presented. A buried Nd:GGG waveguide laser has been fabricated for the first time by …
-
Scanned pulsed laser annealing of Cu thin films
… the grains could influence reliability. Scanned laser annealing can, in principle, be used to develop test structures with extremely large grains which could be used to quantify the effects of grain boundary scattering and the role of crystallographic orientation in interfacial electromigration. …
-
Growth of Semiconductor Thin Films by Pulsed Laser Deposition
Pulsed ultraviolet light from a XeF excimer laser was used to grow thin films of zinc oxide and tin dioxide on (111) p-type silicon wafers within a versatile high vacuum laser deposition system. This pulsed laser deposition system was self-designed and self-built. Parameters such as pressure, …
-
DIAGNOSTICS AND REAL-TIME MONITORING OF PULSED LASER ABLATION
… diagnostics and real-time monitoring during pulsed laser ablation of solid materials are investigated. It is found that acoustic, optical and electric signals generated are closely related to laser processing conditions, material surface and bulk properties. A wide band microphone is used to …
-
Photothermal effects of pulsed laser irradiation of biological tissue
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
-
Pulsed Laser Deposited Iron Garnet Thin Films for Spintronics
… garnet [GGG, (111) orientation] substrates using pulsed laser deposition (PLD). Sc, a nonmagnetic cation, occupies up to 40% of the octahedral Fe sites. Anomalous Hall effect-like spin Hall magnetoresistance measurements were performed to determine the effect of scandium content on spin mixing …
-
Fundamental mechanisms of pulsed laser ablation of biological tissue
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
-
Pulsed-Laser Ultrasound Generation in Fiber-Reinforced Composite Material
A laser-based ultrasonic technique using a pulsed laser for stimulating ultrasonic waves in fiber-reinforced composite materials is the subject of investigation. For convenience, the material is chosen to be homogeneous transversely isotropic. The study is strictly limited to the laser power …
-
Heat transfer during pulsed laser cutting of thin sheets
A numerical model of the temperature field during pulsed laser cutting of thin sheets (approximately 2.5 x l0⁻⁵ m) was developed. Cutting was simulated through removal of nodes from a finite difference scheme based on sensible heating to the phase change temperature and a single value of latent …
-
Pulsed Laser Dielectric Ablation for Copper-plated Silicon Solar Cells
… solar cell manufacturing. However, concerns of laser-induced damage with carrier recombination and plated metal adhesion have contributed to a low market fraction of Cu-plated modules. This thesis aimed to further understand the contact formation process using light-induced plating (LIP) on …
-
Pulsed laser induced breakdown in solid state materials and air
Laser induced breakdown is important in applications ranging from laser machining to laser induced breakdown spectroscopy to laser induced damage. Laser induced breakdown in dielectric materials results from a combination of multiphoton absorption (MPA), tunneling and avalanche ionization. Aspects …
-
PULSED LASER PROCESSING FOR HIGH EFFICIENCY SILICON WAFER SOLAR CELLS
Laser technology has become one of the commonly applied techniques for high-efficiency silicon wafer solar cell fabrication. In order to incorporate laser processing technology in high efficiency solar cell fabrication, laser induced material damage has to be minimized or even eliminated. This …
-
Pulsed-Laser-Induced Melting and Solidification of Thin Metallic Films
This thesis focused on investigating excimer-laser induced melting and solidification of thin metallic films on SiO2. Two distinct topics were pursued: (1) microstructural manipulation and optimization of Cu films via SLS of as-deposited Cu films on SiO2, and (2) investigation of oriented …
-
Bending Of Metallic Thin Foil Via High Energy Pulsed Laser Peening
Laser Peen Forming (LPF), a novel method used to form thin metallic engineering foils,is a manufacturing process utilizing strong shockwaves induced by high pressuresintroduced to the surface of a target by high energy, pulsed laser beams. It is a non-thermal,non-contact approach that improves the …
Page 1 of 14