Polarization state control for high peak power applications
Abstract
Numerous applications in the extreme field science are possible with circularly polarized high peak power ultrashort pulses. Commonly used quarter wave plates are not applicable here, while multi-mirror schemes are very complicated. We showed that the simple PET film 20 m thick can be used to control the polarization state of the high peak power beam and achieve ellipticity of 0.8 with negligible nonlinear phase distortion. The film can withstand shots at intensity of W/cm without visible damage. Thus, for a PW laser system and beam diameter of 20 cm the PET film can be used for quite a long time. We proved this experimentally using 1 TW femtosecond Ti:Sa laser measuring the angular distribution of the second harmonic from the plasma channel created in an undercritical gas plume.
Cite
@article{arxiv.2407.20113,
title = {Polarization state control for high peak power applications},
author = {E. M. Starodubtseva and I. N. Tsymbalov and D. A. Gorlova and K. A. Ivanov and A. B. Savel'ev},
journal= {arXiv preprint arXiv:2407.20113},
year = {2024}
}