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We report precise characterization and compensation of high-order phase distortions of a supercontinuum generated by ultrafast fiber lasers. By using multiphoton intrapulse interference phase scan (MIIPS) technique, the pulses are compressed to 12.8 fs (within 0.1% of the transform-limited value) automatically in less than thirty seconds.
We report on the influence of pulse duration, bandwidth, and phase shaping on femtosecond laser induced breakdown spectroscopy (LIBS) and micromachining of metallic samples. Shorter pulses gave a lower threshold. Different phase functions were tested, and sample-dependent differences were found. Phase dependence was greater near threshold. When 30fs pulses were stretched to 10ps by linear chirp, little...
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