Sökning: "ultraviolet lasers"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden ultraviolet lasers.

1. 1. Concepts for compact solid-state lasers in the visible and UV

   Författare :Sandra Johansson; Fredrik Laurell; Patrick Georges; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; frequency conversion; visible lasers; ultraviolet lasers; KTiOPO4; BiBO; BBO; quasi phase-matching; birefringent phase-matching; solid-state lasers; Physics; Fysik;

   Sammanfattning : In many fields, scientific or industrial, optical devices that can be tailored in terms of spectral qualities and output power depending on the application in question are attractive. Nonlinear optics in combination with powerful laser sources provide a tool to achieve essentially any wavelength in the electromagnetic spectrum, and the advancement of material technology during the last decade has opened up new possibilities in terms of realising such devices. LÄS MER

3. 2. Ultraviolet vertical-cavity surface-emitting lasers and vertical microcavities for blue lasers

   Författare :Filip Hjort; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaN; ultraviolet; microcavity; electrical conductivity; vertical-cavity surface-emitting laser; AlGaN; electrochemical etching; nanostructures; distributed Bragg reflector;

   Sammanfattning : III-nitride materials are used for ultraviolet (UV) and visible light emitters. One such light source is the vertical-cavity surface-emitting laser (VCSEL) that could find applications within areas ranging from sterilization and medical treatment to car headlights and augmented reality displays. LÄS MER

4. 3. Compact diode-pumped solid-state lasers

   Författare :Stefan Spiekermann; KTH; []
   Nyckelord :visible lasers; UV lasers; solid-state lasers;

   Sammanfattning : Compact diode-pumped solid-state lasers (DPSSL) arecontinuously replacing traditional gas lasers as well asenabling completely new technology. However, compact and costefficient designs are required to satisfy end-user demands. Theaim of this thesis was therefore to investigate novel laserdesigns for given applications considering these demands. LÄS MER

5. 4. Control of Coherent Extreme Ultraviolet Light and Light Sources

   Författare :Neven Ibrakovic; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ultrafast lasers; XUV optics; high-order harmonic generation; quantum path interference; opto-optical modulation; free electron lasers; nitrogen lasing; Fysicumarkivet A:2019:Ibrakovic;

   Sammanfattning : Coherent extreme ultraviolet (XUV) light sources are necessary for the investigation of physical processes in the natural length and time scales of atoms. These experiments require a high degree of control of the coherent XUV light. LÄS MER

7. 5. Toward Creating a Coherent, Next-Generation Light Source with special emphasis on nonlinear harmonic generation in single-pass, high-gain free-electron lasers

   Författare :Sandra G. Biedron; Lunds universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Visible and Ultraviolet Sources; Intense Particle Beams and Radiation Sources; Frequency Conversion; Free-Electron Lasers; Harmonic Generation; Physics; Fysik;

   Sammanfattning : There is a strong desire for short wavelength (~1 Å), short pulsewidth (.... LÄS MER