Search for dissertations about: "Lasers"
Showing result 11 - 15 of 332 swedish dissertations containing the word Lasers.
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11. Focusing circular grating-coupled surface-emitting lasers
Abstract : .... READ MORE
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12. Short Pulses in Engineered Nonlinear Media
Abstract : Short optical pulses and engineered nonlinear media is a powerful combination. Mode locked pulses exhibit high peak powers and short pulse duration and the engineered ferro-electric KTiOPO4 facilitates several different nonlinear processes. READ MORE
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13. Dynamical Analysis of Terahertz Quantum Cascade Lasers
Abstract : This thesis focuses on various aspects in terahertz quantum cascade lasers such as high temperature performances, electrical instabilities and chaos. In the first part of the thesis, an introduction to the topic and the non equilibrium Green's function package applied is given with particular emphasise on the inhomogeneous domain model and the chaos theory. READ MORE
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14. Dilute Nitride Lasers and Spectrally Engineered Semiconductor Laser Resonators
Abstract : The first part of this thesis deals with long wavelength (1.2-1.3 um) InGaAs(N)multiple quantum-well (QW) lasers grown on GaAs, with the aim of understandingand improving their threshold and temperature characteristics. The epitaxialmaterial is grown by molecular beam epitaxy (MBE). READ MORE
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15. Generation of coherent short-wavelength radiation --- High-order harmonics and x-ray lasers
Abstract : The recent availability of short-pulse, high-intensity, compact lasers has opened doors to new and fascinating areas in atomic physics. Using the Lund Terawatt Laser, the interaction of femtosecond, near-infrared and visible laser radiation with matter at intensities in the range 1013--1017 W/cm2 was studied. READ MORE