The spatiotemporal waveform evolution of self-focused high-power femtosecond pulses was analyzed using a three-dimensional phase-retrieval cross-correlation technique. Within the experimental power range, the beams shrink to a diameter of 20-25 μm in 4-mm propagation, and no catastrophic beam collapse was observed. The mechanism that blocks run-away self-focusing was clarified.
|Number of pages||2|
|State||Published - 2000|
|Event||Quantum Electronics and Laser Science Conference (QELS 2000) - San Francisco, CA, USA|
Duration: 7 May 2000 → 12 May 2000
|Conference||Quantum Electronics and Laser Science Conference (QELS 2000)|
|City||San Francisco, CA, USA|
|Period||7/05/00 → 12/05/00|