Five-fold compression of 250 TW laser pulses

摘要

The pulse spectrum at the laser output was stretched due to self-phase modulation in glass and then compressed by chirping mirrors. It was demonstrated that with an optimal choice of mirror dispersion, a pulse with an energy of 17 J can be compressed from 70 fs to 14 fs. The method has three undoubted merits: simplicity and low cost, negligible pulse energy loss, and applicability to any high-power laser.