Kilowatt-average-power compression of millijoule pulses in a gas-filled multi-pass cell
Kilowatt-average-power compression of millijoule pulses in a gas-filled multi-pass cell
We demonstrate the 6.5-fold compression of 1-mJ 200-fs pulses by spectral broadening in a gas-filled multi-pass cell and subsequent chirped-mirror compression. A coherently-combined fiber laser source is compressed with an overall power efficiency of ~95% resulting in a record compressed power of >950 W. In a second experiment, the same …