Sökning: "rate-equations"
Visar resultat 11 - 15 av 15 avhandlingar innehållade ordet rate-equations.
11. Computer Simulations of Photonic Semiconductor Devices
Sammanfattning : This thesis aims to provide insight into three important aspects of modern computer simulation techniques related to advanced photonic semiconductor devices. These aspects are quantum size effects, waveguiding properties, and device dynamics. LÄS MER
12. Optical properties of GaN and InGaN studied by time- and spatially-resolved spectroscopy
Sammanfattning : The past decade has seen rapid expansion in the use of group III-nitride based devices. White InGaN LEDs are substituting incandescent light bulbs, space satellite industry adopting ion-radiation-resistant GaN transistors, and AlGaN deep UV LEDs are increasingly being used for water disinfection and air purification. LÄS MER
13. Modelling and simulation of hot stamping
Sammanfattning : The growing effort to reduce vehicle weight and improve passive safety in the automotive industry has drastically increased the demand for ultra high strength steel components. There are several production technologies for such components. LÄS MER
14. Diode-pumped rare-earth-doped quasi-three-level lasers
Sammanfattning : Many rare-earth-doped materials are suitable for laser operation and this thesis focuses on diode-pumped solid-state lasers employing crystals doped with the trivalent rare-earth ions neodymium (Nd3+), ytterbium (Yb3+) and erbium (Er3+). Especially, the quasi-three-level transitions in Nd and Yb have been studied as well as the eye-safe three-level transition around 1. LÄS MER
15. Single-Electron Tunneling Spectroscopy in Magnetic Nanoparticles and Molecular Magnets
Sammanfattning : This thesis deals with single-electron tunneling in transistor-like devices in which the central electrode is either a metal nanoparticle (possibly ferromagnetic) or a molecular magnet. The investigated systems split into two different categories, depending on the size of the central island. LÄS MER