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 127 for “"Pulsed Laser Deposition"”.
-
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 …
-
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 …
-
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, …
-
Template Directed Growth of Nb doped SrTiO₃ using Pulsed Laser Deposition
… which were then filled with Nb:STO using Pulsed Laser Deposition (PLD) at room temperature. This technique produced nanowires and nanodots with critical dimensions below 100 nm, and a yield of approximately 95%. In addition to scanning electron microscopy and atomic force microscopy …
-
Pulsed laser deposition of chalcogenide glass materials for potential waveguide laser applications
… many applications for small scale, solid state lasers in the near infrared, where conversely there are very few such devices. A lasing device in a rare earth doped gallium-lanthanum-sulphide thin film is attractive due to emission at wavelengths in the 2 to 5 µm region where many gasses and …
-
Abscheidung von Neodym-Phosphatglas mittels pulsed laser deposition zur Fertigung integrierter Wellenleiterlaser
An integrated waveguide laser can consist of a pump diode laser monolithically joined to a thin film deposited in front of a pump diode on a common mount. For this purpose, a material suitable for low-temperature processing and integration with optical and electronic components has to be …
-
Pulsed laser deposition of thick multilayer garnet crystal films for waveguide laser devices
… aim of this project was to use the technique of pulsed laser deposition (PLD) to fabricate thick multilayered garnet crystal planar waveguides with rare-earth ion doped cores for use as planar waveguide laser devices. Planar waveguides are of interest because of the implications of their …
-
Tuning Strong Correlated Properties in EuTiO3 Thin Films Grown by Pulsed Laser Deposition
… of growth pressure, substrate temperature and laser repetition rate. The optimized growth condition (laser repletion rate of 3 Hz, substrate temperature of 710 oC and growth pressure of 1-2∙10-6 Torr) was confirmed to make the (ETO)1-x-(Eu2O3)x (x = 0.2, 0.25, 0.33, 0.5) epitaxial thin film on …
-
Diamond-like carbon and ceramic materials as protective coatings grown by pulsed laser deposition
… place even more stringent conditions on the deposition processes. The properties of coatings deposited by pulsed laser deposition are determined by the deposition parameters, the composition of the PLD plasma and its ionization states, the substrate conditions, etc.. In this way, the …
-
Growth by pulsed laser deposition and characterisation of zinc oxide thin films and nanostructures
… thin films and nanostructures grown using the pulsed laser deposition technique. In this technique, a solid state Nd:YAG laser operating at 266 nm and with a 6 ns pulse width was fired at a sintered, ceramic target to produce an expanding plume of ZnO into a vacuum chamber (pressures in the …
-
Excitation-Induced Ge Quantum Dot Growth on Si(100)-2X1 by Pulsed Laser Deposition
… dots (QD) are grown on Si(100)-(2×1) with laser excitation during growth processes by pulsed laser deposition (PLD). <em>In situ </em>reflection-high energy electron diffraction (RHEED) and post-deposition atomic force microscopy (AFM) are used to study the growth dynamics and morphology of …
-
Structure and properties of transparent conductive ZnO films grown by pulsed laser deposition (PLD)
… thin films were grown on glass substrates by the pulsed laser deposition (PLD) technique using a KrF excimer laser with wavelength of 248nm. The influence of ambient oxygen pressure, substrate temperature, laser fluence, the number of pulses and doping with silicon was investigated. The …
-
Pulsed laser deposition of superconducting Sr2RuO4 thin-films and the role of crystallographic defects
… beam epitaxy (MBE), reproducible growth by pulsed laser deposition (PLD) remains extremely challenging. In this thesis, we developed a protocol for the reliable growth of superconducting SRO214 thin-films by pulsed laser deposition and identify the type of structural defects that are …
-
Pulsed Laser Deposition von Er:ZBLAN-Schichten für den Aufbau eines integrierten Wellenleiterlasers im grünen Spektralbereich
A production of laser active Er:ZBLAN thin films (1um) with pulsed laser deposition (PLD) on MgF2 substrates is presented in this dissertation. Er:ZBLAN films with low droplet density (<10 per 100x100um2) were produced with PLD for the first time. Optical properties (absorption- and emmision …
-
Ultra-thin boron nitride films by pulsed laser deposition: Plasma diagnostics, synthesis, and device transport
<p>This work describes, for the first time, a pulsed laser deposition (PLD) technique for growth of large area, stoichiometric ultra-thin hexagonal and amorphous boron nitride for next generation 2D material electronics. The growth of boron nitride, in this case, is driven by the high kinetic …
-
An analysis of ferromagnetic shape memory alloys produced by melt spinning, sputtering and pulsed laser deposition.
… alloys were also produced by both sputtering and pulsed laser deposition in order to characterise their behaviour and gain some insight into the growth conditions necessary to successfully produce thin films of ferromagnetic shape memory alloys. This was done because thin films grown at low …
Page 1 of 7