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Opt Lett. 2011 Feb 15;36(4):442-4. doi: 10.1364/OL.36.000442.

Hollow fiber for flexible sub-20-fs pulse delivery.

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  • 1Femtolasers Produktions GmbH, Vienna, Austria.


Delivery of sub-20-fs pulses through 80 cm of a chirped photonic crystal fiber with chirped-mirror precompensation is experimentally demonstrated. The pulses out of the fiber are within 15% of the bandwidth limit and exhibit a pulse energy of 1 nJ. Peak powers amount to 50 kW directly out of the fiber. Measurements indicate a good pulse contrast with little satellite content. The combination of a specially designed hollow fiber with chirped mirrors sets a new record for the pulse durations directly delivered through a fiber.

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