High harmonic generation from long wavelength drivers

 · High harmonic generation sources with vacuum beamline, the only commercial solution of tabletop-scale coherent EUV laser systems found on the market. Quantum Microscope platform consisting of our EUV laser system along with an experimental end-station such as pump-probe spectroscopy or coherent diffraction imaging. Abstract. Light is a powerful tool for making observations of the physical world. In particular, light in the extreme ultraviolet (EUV) and X-ray regimes enable unique and higher resolution measurements than is possible using longer wavelengths. A relatively new technique called high-order harmonic generation (HHG) provides a route for scientists to produce light in . 5 rows ·  · By tuning the central wavelength of the driver source, the high-order harmonic spectra in Cited by:

The theory predicts that for long wavelength driver pulses, used to reach very high harmonics in the water window energy range, the phase matching bandwidth is greatly reduced. Acknowledgments This work was supported by AFOSR grants FA through the DARPA HRS programme, FA and SRC at University of Wisconsin. Compared to the continuum-like EUV generation covering broad bandwidths when using long wavelength drivers, the strong high-order harmonic structure observed here with visible drivers is more advantageous in terms of the amount of energy concentrated in one harmonic as long as the tunability is sufficiently maintained. Pushing this harmonic cutoff further would conventionally require the use of longer wavelength drivers approaching the far-infrared regime. However, long driving wavelengths can also result in relativistic effects, resulting in longitudinal Lorentz drifts that could cause the HHG process to be inhibited.

9 may electron trajectories in the generation plane. The tighter focusing geometry and longer wavelength associated with these emerging driving. The paper reviews recent advances in high harmonic generation from mid-infrared lasers. The results emphasize the advantages of long wavelength drivers for. 5 may The longer wavelength of the driving field results in a higher excursion time Tex ∝ A0 of the freed electrons.