TW-class sub-2-cycle post-compression of Ti:Sapphire laser pulses in a gas-filled multipass cell

TL;DR

This paper demonstrates a novel, efficient method for post-compressing Ti:Sapphire laser pulses from 40 fs to 4 fs using a gas-filled multipass cell, achieving record pulse duration in a compact setup.

Contribution

It introduces a new single-stage gas-filled multipass cell technique for extreme temporal compression of laser pulses, achieving record short durations with high efficiency.

Findings

Achieved 4 fs pulse duration from 40 fs pulses.

Realized 60% overall compression efficiency.

Demonstrated a compact, single-stage setup for pulse post-compression.

Abstract

We report on the nonlinear temporal post-compression of 7 mJ sub-40 fs pulses from a commercial kHz Ti:Sapphire laser down to a record 4 fs duration (1.5 optical cycle) in a compact single-stage gas-filled multipass cell, with 60% overall compression efficiency.