Ayhan Demircan

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The concept of rogue waves arises from a mysterious and potentially calamitous phenomenon of oceanic surfaces. There is mounting evidence that they are actually commonplace in a variety of different physical settings. A set of defining criteria has been advanced; this set is of great generality and therefore applicable to a wide class of systems. The(More)
We report on a numerical study of supercontinuum generation in a single-mode optical fiber. We show that the modulation instability (MI) can be responsible for the generation of ultrabroadband octave-spanning continua for pico- and subpicosecond pulses in the anomalous- as well as in the normal dispersion region. The MI turns out to dominate higher-order(More)
We reanalyse the probability for formation of extreme waves using the simple model of linear interference of a finite number of elementary waves with fixed amplitude and random phase fluctuations. Under these model assumptions no rogue waves appear when less than 10 elementary waves interfere with each other. Above this threshold rogue wave formation(More)
We present in-situ measurements of pulse dynamics along a femtosecond filament. Pulse-splitting has been observed, resulting in self-compression to 5.3 fs, influencing high-order harmonic generation along the filament.