High Repetition Rate, High Intensity Vector Beams at Short Wave Infrared Wavelengths

Using relativistic high harmonic generation to generate x-rays with optical angular momentum is practically difficult due to laser contrast and size constraints of the phase plates required. Here, we present a scheme in which nonlinearly produced short pulse 1300 nm light is generated with millijoule energy levels. We characterize the properties of the laser pulse, as well as demonstrate the high intensity nature of the pulse. This work was supported by STROBE: A National Science Foundation Science & Technology Center under Grant No. DMR-1548924. This material is based upon work supported by the CAREER: National Science Foundation under Grant No. PHY-1753165.