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High brightness picosecond all-fiber generation in 525–1800nm range with picosecond Yb pumping

A. B. Rulkov, M. Y. Vyatkin, S. V. Popov, J. R. Taylor, and V. P. Gapontsev

Open Access Open Access

Abstract

Pumping of highly-nonlinear microstructured fibers with zero-dispersion around the pump wavelength of a 50kW peak-power picosecond Yb-fiber laser allowed extensive polychromatic picosecond operation down to 525nm in all-fibre format. Spectral power densities over 1mW/nm and potential of further pulse compression to femtoseconds is demonstrated.

©2005 Optical Society of America

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Figures (6)
Fig. 1.
Fig. 1. Configuration of the all-fiber, ps seed laser source. PC — polarization controller.

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Fig. 2.
Fig. 2. The effect of the pulse bandwidth restriction (a) on pulse duration (b).

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Fig. 3.
Fig. 3. Evolution of the output bandwidth (-10 dB level) and calculated output pulse duration (dispersion of the fiber amplifier of -19 ps/(nm km) assumed) for the ps pulses.

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Fig. 4.
Fig. 4. (a) The spectrum of the 8W average power 3.2ps pulses. (b) Output spectrum after 30m long PCF in low-pump-power regime (6 mW average, 68W peak-power pumping)

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Fig. 5.
Fig. 5. Diagram of the picosecond polychromatic fiber integrated source with up to 1mW/nm spectral power density in 525–1800nm range.

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Fig. 6.
Fig. 6. (a) Output spectrum of different lengths of the PCF at 1.5 W average- (16kW peak-) pump level; inset- autocorrelation trace of the 15ps pulse at 780nm. (b) The loss profile of the 1040 ZDW PCF.

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