Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 46: Ultrashort laser pulses II

Q 46.7: Vortrag

Donnerstag, 20. März 2014, 15:30–15:45, DO26 207

Time-domain pulse compression by interfering time-delay operations — •Yonghao Mi, Andreas Kaldun, Kristina Meyer, and Thomas Pfeifer — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

We introduce a time-domain pulse compression method for arbitrary pulses [1]. Coherent superposition of a number of pulse replicas with time delays can lead to constructive interference at only one specific time, while partly destructive interference reduces the intensity of the pulse anywhere else in time. We show that chirped and statistical pulse shapes can be compressed effectively. By optimizing the number of employed replicas, pulse durations close to their corresponding Fourier transform limits can be obtained after compression while already very few replicas (~3-4) are enough to lead to substantial pulse duration reduction. We also investigate the influence of the method on the spectrum of the pulses, where the spectral phase is close to flat in the regions of large spectral amplitude, as expected for pulse compression.

[1] Yonghao Mi, Andreas Kaldun, Kristina Meyer and Thomas Pfeifer, Phys. Rev. A 88, 053824 (2013)