RESEARCH - OUR GOALS
Laser-Produced Plasmas (LPP) and HHG in External Plasma Sources With Mid-IR Lasers
By mixing mid-IR(𝛚) laser, and its second harmonic (2𝛚) we would add a control mechanism for the inline spectral interferometry of laser-plasma white-light filamentation in air. By controlling the relative phase of the two laser beams, we would be able to control left-right plasma emission angle. This would add a spatial control mechanism, currently missing in the stand-off CEP atmosphere metrology applications (see the figure above).
By combining mid-IR laser, and plasmas as a HHG medium, we would find optimal parameters for enhancing the X-Ray cut-off energy and increase the laser-SXR conversion efficiency: For example, using He plasma vs neutral He gas as an HHG medium, and 1600 nm driving laser vs 800 nm IR laser, we would extend the cutoff energy by more than an order of magnitude. External plasma sources would have adjustable parameters such as temperature, density, and charge. Highly charged ions with very high Ip (i.e. C5+) have not be used for HHG process.
