Non-Hermitian and Open Systems: Form Fundamentals to Applications

The project investigated non-Hermitian and open systems in the field of optical physics. New algorithms were developed to calculate meta-stable states in atoms and/or molecules, enabling the construction of the model for the nonlinear properties of molecular oxygen. This completed the set of models utilizing Metastable Electronic State Approach, and was applied to the large-scale modeling of long-wavelength infrared pulses propagating nonlinearly through atmospheric turbulence. Non-Hermitian methods were applied to the electron emission from metallic nano-structures, leading to the prediction of a new source of nonlinear optical polarization.