High-Harmonic Generation in the Water Window from mid-IR Laser Sources
arXiv:2101.10547 · doi:10.1103/PhysRevA.106.063113
Abstract
We investigate the harmonic response of neon atoms to mid-IR laser fields (2000-3000nm) using a single-active electron (SAE) model and the fully ab initio all-electron R-Matrix with Time-dependence (RMT) method. The laser peak intensity and wavelength are varied to find suitable parameters for high-harmonic imaging in the water window. Comparison of the SAE and RMT results shows qualitative agreement between them as well as parameters such as the cutoff frequency predicted by the classical three-step model. However, there are significant differences in the details, particularly in the predicted conversion efficiency. These details indicate the possible importance of multi-electron effects, as well as a strong sensitivity of quantitative predictions on specific aspects of the numerical model.
References in corpus (7)
- Energy scaling of water window high-order harmonic generation for single-shot soft X-ray spectroscopy and live-cell imaging
- Harmonic generation of noble-gas atoms in the Near-IR regime using ab-initio time-dependent R-matrix theory
- Pulse-shape control of two-color interference in high-order-harmonic generation
- Atomic harmonic generation in time-dependent R-matrix theory
- Displacement effect in strong-field atomic ionization by an XUV pulse
- Impact of two-electron dynamics and correlations on high-order harmonic generation in He
- Ellipticity Dependence of Excitation and Ionization of Argon Atoms by Short-Pulse Infrared Radiation