The Effect of Pulse Shape on the Quality of Pulses Generated by Cross Polarized Wave Generation Technique

Abstract

The quality of the cross-polarized wave generation (XPW) pulses or the compression ability is studied with different apparatus settings and for two types of pulses. It has been shown that the quality of pulses thatinitially having low intensity wings can be maintained though the XPW process. Encountering nonlinear phase modulations (SPM) before the XPW process does not affect the compression of the pulses of this type. The compression ability of initially low quality pulses can be significantly enhanced in an XPW process giving that no SPM is preceding the process. If the SPM is inevitable, a compression stage between the SPM and the XPW processes can eliminated the effect of SPM on the quality of the generated pulse. Material dispersion and some intentionally introduced quadratic phase can remove the effect of SPM and keeps the high quality. However, the high pulse quality in this case is valueless because it will be accompanied by dramatic spectral narrowing.