Comparison of supercontinuum generation based on high-energy nanosecond pulses via single-mode and photonic-crystal fibers |
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Authors: | Duan L N Liu X M Wang L R Mao D Wang G X |
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Institution: | (1) Department of Applied Physics, Cornell University, Ithaca, NY 14853, USA;(2) Horiba Jobin Yvon Inc., Edison, NJ 08820, USA;(3) Colorado School of Mines, Golden, CO 80401, USA |
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Abstract: | We have experimentally investigated the supercontinuum (SC) generation based on high-energy Gaussian-spectrum pulses emitted
from an erbium-doped fiber laser with large-anomalous dispersion. The pulses exhibit rectangular shape in temporal domain
with the pulse duration of about 16 ns. When the amplified pulses propagate through 10-km single-mode fiber, the SC ranged
from 1530 to 1750 nm arises from the stimulated-Raman-scattering effect and the pulses break up due to the modulation instability.
Comparatively, when the amplified pulses propagate through a segment of highly-nonlinear zero-dispersion-flattened photonic
crystal fiber, super-broad SC beyond the range of 1300–1750 nm is generated due to strong four-wave mixing effect, whereas
the pulses almost maintain their shapes. |
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