We explore the significance of laser-induced correlation effects for high-order harmonic generation (HHG) in a linear chain model generic band gap material both single-IR-pulse and VUV-pump--IR-probe HHG schemes. examine various pump-pulse excitations, categorize signatures into two classes related to edge-state bulklike effects. The relative importance ef- fects decreases with increasing syste...

High-harmonic generation (HHG) in solids is a fundamental nonlinear phenomenon, which can be efficiently controlled by modifying system parameters such as doping-level and temperature. In order to correctly predict the dependence of HHG on these parameters, consistent theoretical formulation light-matter coupling crucial. Recently, contributions current that are often missing analysis based sem...

When a high power laser beam irradiates small aperture on solid foil target, the strong field drives surface plasma oscillation at periphery of this aperture, which acts as ``relativistic oscillating window.'' The diffracted light that travels though such an contains high-harmonics fundamental frequency. driving is circularly polarized, high-harmonic generation (HHG) process facilitates convers...

High harmonic generation (HHG) in crystals has revealed a wealth of perspectives such as all-optical mapping the electronic band structure, ultrafast quantum information and creation novel all-solid-state attosecond sources. Significant efforts have been made to understand microscopic aspects HHG crystals, whereas macroscopic effects, non-linear propagation effects driving pulse inside dense so...

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We present a study of the possibility to significantly enhance efficiency high-order harmonic generation (HHG) using few-cycle optical waveforms obtained by superposing two laser pulses different color delayed optimally relative each other. Special attention is paid dynamics depopulation atomic states, which, on one hand, promotes electrons continuum take part in high-energy photon emission, bu...

We study the role of dark and bright autoionizing states (AISs) in photoionization high-order harmonic generation (HHG) using a one-dimensional helium model. This model allows numerical integration time-dependent Schr\"odinger equation beyond single-electron approximation, completely taking into account electronic correlation. find level structure system spatial distribution density for several...

High-harmonic generation (HHG) provides short-wavelength light that is useful for precision spectroscopy and probing ultrafast dynamics. We report efficient, phase-coherent harmonic up to 9th-order (333 nm) in chirped periodically poled lithium niobate waveguides driven by phase-stable $\leq$12-nJ, 100 fs pulses at 3 $\mu$m with MHz repetition rate. A mid-infrared ultraviolet-visible conversion...

Adrenal hypoplasia congenita (AHC) is an X-linked disorder that typically presents with adrenal insufficiency during infancy. Hypogonadotropic hypogonadism (HHG) has been identified as a component of this disorder in affected individuals who survive into childhood. Recently, AHC was shown to be caused by mutations in DAX-1, a protein that is structurally similar in its carboxyterminal region to...