Laguerre-Gaussian Soft X-Rays Generated from Phase Matched Strong Field High Harmonic Generation

Intense laser gas interactions are capable of generating coherent light pulses in the extreme ultraviolet and soft x-ray frequencies through a process called High Harmonic Generation (HHG). These light pulses are as short as attoseconds in duration which provide the fastest possible probes for observing electronic and magnetic dynamics on the fastest timescales. In this poster, we present results on measured phase matching pressure curves of harmonics produced by 800 nm orbital angular momentum beams with noble gas plasmas. We compare phase matching properties and results with linearly polarized gaussian beam drivers to identify which components of the phase matching model are impacted by the inclusion of orbital angular momentum.