Single-stage few-cycle nonlinear compression of milliJoule energy Ti:Sa femtosecond pulses in a multipass cell

We report on the nonlinear temporal compression of mJ energy pulses from a Ti:Sa chirped pulse amplifier system in a multipass cell filled with argon. The pulses are compressed from 30 fs down to 5.3 fs, corresponding to two optical cycles. The post-compressed beam exhibits excellent spatial quality and homogeneity. These results provide guidelines for optimizing the compressed pulse quality and further scaling of multipass-cell-based post-compression down to the single-cycle regime. (C) 2021 Optical Society of America

Automated summary

This study reports the nonlinear temporal compression of mJ energy pulses from a Ti:Sa chirped pulse amplifier system in a multipass cell filled with argon. The compressed pulses are brought down from 30 fs to 5.3 fs, corresponding to two optical cycles, with excellent spatial quality and homogeneity in the post-compressed beam. These results offer guidelines for optimizing compressed pulse quality and scaling multipass-cell-based post-compression down to the single-cycle regime.