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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 20 of 24 for “"solid state laser"”.
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Intensity stabilization of a solid-state laser for interferometric gravitational wave detectors
… intensity of a 10 Watt continuous-wave Nd:YAG laser. A relative intensity noise of 1 x 10⁻⁸ [square root] Hz at 10 Hz has been achieved.
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Development and application of saturable absorbers to femtosecond solid-state laser mode-locking
… stability and reliability of ultrashort pulse lasers, making them more useful in many applications. These versatile devices can be grown both epitaxially with molecular beam epitaxy and non-epitaxially using RF sputtering. In this thesis, the development and application of both types of …
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LASER DIODE PUMPED ND: YAG SOLID STATE LASER FOR APPLICATIONS IN SECOND HARMONIC GENERATION
… this thesis, a new pumping approach for the YAG laser pumped by laser diode is proposed to achieve high energy/power performances. In this approach, the central part of the pump beam from the laser diode is absorbed directly by the YAG rod through its convex end surface, which is very much like …
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A Mathematical Model of the Dynamics of an Optically Pumped Codoped Solid State Laser System
… for the dynamics of an optically pumped codoped solid state laser system. The model comprises five first order, nonlinear, coupled, ordinary differential equations which describe the temporal evolution of the dopant electron populations in the laser crystal as well as the photon density in the …
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A Mathematical Model of the Dynamics of an Optically Pumped Four-Level Solid State Laser System
… the dynamics of an optically pumped four-level solid state laser system. A general mathematical model that describes the spatial and temporal evolution of the electron populations in the laser rod as well as the development of the left and right traveling photon fluxes in the cavity is …
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Study of the physics of the power-scaling of end-pumped solid-state laser sources based on Nd:YVO<sub>4</sub>
… conditions demonstrated that the heating in the laser crystal under non-lasing conditions is significantly greater than under lasing conditions. The thermal lenses are almost 5 times stronger under non-lasing conditions than lasing condition for the 1% doped crystal. By comparing the effect of …
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Applications of programmable MEMS micromirrors in laser systems
… use as intracavity active Q-switch elements in solid-state laser systems, are investigated. The AVC scanning micromirrors are created through a multi-user fabrication process, with theoretical and experimental investigations undertaken on the influence of the AVC initial conditions on the …
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Introduction of a Fully Relativistic Capable Basis Set in the ab initio Orthogonalized Linear Combination of Atomic Orbitals Method
… effects, and the need to correctly model excited state properties are major impediments to the accurate prediction of the optical properties of candidate materials for solid-state laser crystal and luminescent applications. To overcome these challenges, new methods must be created to improve the …
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Ultrahigh resolution optical coherence tomography for the detection of early stage neoplastic pathologies
… stage neoplastic pathologies. Recent advances in solid-state laser and nonlinear fiber technology have enabled the development of ultrahigh resolution and spectroscopic OCT techniques which promise to improve tissue differentiation and image contrast. Previous ex vivo, benchtop ultrahigh …
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Femtosekundinių lazerio impulsų taikymas refrakcinei chirurgijai /
… for treatment of refractive errors is the laser-assisted in situ keratomileusis. The main goal of this work is to explore the possibility to replace two different laser systems (UV nanosecond and nIR femtosecond), that are currently used for the refractive corneal surgery, with a single …
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Applications of femtosecond laser pulses in refractive eye surgery /
… for treatment of refractive errors is the laser-assisted in situ keratomileusis. The main goal of this work is to explore the possibility to replace two different laser systems (UV nanosecond and nIR femtosecond), that are currently used for the refractive corneal surgery, with a single …
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Bangolaidžių integravimas į lydytą kvarcą panaudojant femtosekundinius šviesos impulsus /
Nowadays ultrafast laser micromachining of transparent dielectrics, such as fused silica, is becoming one of the most promising and intriguing areas of photonics. One of the key factors owing to this, is the unique property of this type of radiation to induce refractive index changes, when focused …
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Modelling high peak-power solid-state lasers
… make recommendations in the design stages for a laser product developed at Thales UK Ltd., the sponsor company for this thesis.;The second major project concerned the modelling of a non-line-of-sight Light Detection and Ranging (LIDAR) system, using ray-tracing techniques to simulate …
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Thermal and spectral effects in intracavity Raman lasers
… extend the spectral coverage of well-established solid-state laser sources. In an intracavity Raman laser, a Raman crystal is placed inside the cavity of the fundamental laser, and the output frequency is red-shifted by an amount corresponding to a vibrational energy level of the Raman crystal. …
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Femtosecond Laser Interactions In The Condensed Phase: Application to Transient Absorption and Materials Processing
Solid State laser systems are now capable of generating temporal pulses of sub-10 fs duration and facilitate the study of ultrafast phenomena in chemical, biological and physical systems. The high field intensities inherent in these pulses, means that highly non-linear processes may be observed. …
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Terbium-based fluoride and oxide crystals for visible lasers
… with regard to their properties as potential laser active materials with emission in the visible range. Main spectroscopic and laser investigations have been carried out in LiLuF4 and LiTbF4, KY3F10 and KTb3F10, BaY2F8, LaF3, and TbF3 as fluorides materials and YAlO3 and TbAlO3, Y3Al5O12, and …
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Modeling the Transient Effects of High Energy Subsystems on High-Performance Aerospace Systems
… power conditioning equipment, optics, and a solid-state laser. The high-energy weapon system is integrated into the aircraft by a dedicated thermal management system connected to the onboard air and fuel fluid networks. The dedicated thermal management system includes heat exchangers, thermal …
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Neue Prinzipien zur Realisierung von gepulsten, frequenzstabilisierten Lasern mit hoher mittlerer Leistung und exzellenter Strahlqualität
… werden. Das DIAL basiert auf einem Titan-Saphir-Laser oder einem dazu alternativen OPO-Laser (optisch parametrischer Oszillator). Der für das optische Pumpen dieser Laser nötige Pumplaser wurde im Rahmen dieser Arbeit in der Arbeitsgruppe Nichtlineare Optik des Instituts für Physik der …
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Novel power scaling architectures for fibre and solid-state sources
… the output power of rare-earth ion doped fibre lasers and amplifiers, fibre amplified spontaneous emission sources, and solid state laser oscillators. Scaling output power from laser sources has been a topic of interest ever since the first laser was demonstrated. The development of new …
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Terahertz oscillation and stimulated emission from planar microcavities
… photonic modes are con- fined and the number of states is limited. In the smallest microcavities, i.e. micrometer sized optical resonators, the propagation of only one mode is permitted that is simultaneously amplified internally. This particularly strong enhancement of the electric field is …
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