Optimal-control theory of harmonic generation

Quantum Optimal Control of High-Harmonic Generation from Molecular Systems

Every scale needs right tools and devices to enable researchers to study and even control phenomena in that area. Given the fact that many fundamental phenomena in condensed matter physics and chemistry, such as chemical bonding or charge transfer, are happening on attosecond scale has encouraged researchers to look for essential tools for inspecting this region. At the present time, high-harmo...

Optimal Estimation of Harmonic Components Using ISFLA

In this paper a novel method based on evolutionary algorithms is presented to estimate the harmonic components. In general, the optimization of the harmonic estimation process is a multi-component problem, in which evaluation of the phase and harmonic frequency is the nonlinear part of the problem and is solved based on the mathematical and evolutionary methods; while estimation of amplitude of...

Generation and control of high-harmonic radiation

Comparison of entropy generation minimization principle and entransy theory in optimal design of thermal systems

In this study, the relationship among the concepts of entropy generation rate, entransy theory, and generalized thermal resistance to the optimal design of thermal systems is discussed. The equations of entropy and entransy rates are compared and their implications for optimization of conductive heat transfer are analyzed. The theoretical analyses show that based on entropy generation minimizat...

Ultrafast Plasmonic Control of Second Harmonic Generation

Efficient frequency conversion techniques are crucial to the development of plasmonic metasurfaces for information processing and signal modulation. In principle, nanoscale electric-field confinement in nonlinear materials enables higher harmonic conversion efficiencies per unit volume than those attainable in bulk materials. Here we demonstrate efficient second-harmonic generation (SHG) in a s...