Abstract
We demonstrate generation of the shortest reported 11fs dark pulses using the coherent absorption process on a plasmonic absorber with a gating pulse. The dark pulses appear as a power dip on the envelope of a long carrier pulse and are characterized using the cross-correlation technique. The principal difference and advantage of our approach in comparison with previously developed laser sources of dark pulses is that, in principle, it allows transferring arbitrary pattern of bright pulses into a pattern of dark pulses in another optical signal channel.
Highlights
Dark pulses are sharp dips in power of electromagnetic radiation that are often accompanied by a phase jump across the intensity minimum
We demonstrate generation of the shortest reported 11fs dark pulses using the coherent absorption process on a plasmonic absorber with a gating pulse
The dark pulses appear as a power dip on the envelope of a long carrier pulse and are characterized using the cross-correlation technique
Summary
Dark pulses are sharp dips in power of electromagnetic radiation that are often accompanied by a phase jump across the intensity minimum. Since their first observation [1], dark pulses have attracted considerable attention, especially in the fields of solitons [2, 3], x-ray spectroscopy [4], nonlinear optics [5], Bose – Einstein condensation [6], optical communications [5], generation of Kerr combs [7] and coherent quantum control of optical transitions in atoms [8]. If one of the waves is a short “gate” pulse, the “perfect absorption” regime will lead to the depletion of energy from the other “carrier” wave during their temporal overlap on the absorber, creating a dark pulse
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