Best Selling Books by Patrick Ryan

This dissertation demonstrates knowledge of how to grow and design high quality, layered, semiconductor HMMs for the infrared. It also explores potential applications for HMMs and lays the groundwork for the incorporation of HMMs into semiconductor optoelectronic devices for the infrared.

Large simulation cell sizes, relativistic 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 electron orbital wavefunction and interactions. In this work, a method has been developed to create new analytical four-component, fully-relativistic and single-component scalar relativistic descriptions of the atomic orbital wave functions from Grasp2K numerically represented atomic orbitals. In addition, adapted theory for the calculation of the relativistic kinetic energy contribution to Hamiltonian which bypasses directly solving the Dirac equation has been explicated. The orbital description improvements are tested against YAG, YBCO, SnO2 and BiF3. The improvements to the basis set reflect an improvement in both computational speed and accuracy

Discusses the history, geography, economy, and social customs of Poland.